What is Gravity?

Girl Jumping
Photo by Zachary DeBottis from Pexels










It’s invisible. You can’t smell it. You can’t taste it, but if you fall off a tree you will definitely feel its presence. It is gravity. One of the mysteries of the universe that keeps us together, literally.


Simply put, gravity is an entity that draws objects inward and when this happens, interesting things occur. All planets’ moons rotate around their planet due to their gravitational pull. Planets rotate around their stars, because of the star’s gravitational pull, and stars rotate around their galaxy’s black hole, which has a mind-boggling gravitational force within it.

How Gravity is Formed

Nebulas contain random masses of gas and dust. When this gas and dust start combining, gravity begins to build, which then attracts more matter to combine with the building of gas and dust. Subsequently, the mass can become so big that planets can be formed and if the forming mass gets larger, stars will be created. And onward it goes, (over billions of years), eventually entire solar systems are created, all due to the mysterious force of gravity.

Our moon has gravity as well, but since it is much smaller than Earth, it only has a minimal effect on our planet. The oceans feel the moon’s gravitational pull, which is why we see tides moving in and out.

The Moon’s Influence of Title Waves on Earth

In summary, the more massive the object is the more mass it has and the stronger its gravitational pull will be, so gravity is proportional to mass. In addition, the closer an object is to another object, the stronger its gravitational pull will be on that object as well.


How to Start Your Own Gem Collection

gems and minerals on display
Learning about gems and minerals is exciting and informative

Need a hobby? How about collecting gems and minerals? Mineral collecting is both exciting and informative. Exciting because of the intricate colors and shines the different varieties have and informative because one must learn their geology in order to really appreciate them.  It is a historical trip back in time to discover the hidden gems of the earth.

If you are a beginner who is looking forward to creating a collection of your own, you don’t necessarily have to start out with making huge discoveries of these beautiful gems. You can start right at the beach or your very own backyard if you have one!

Here is a guide on how to start your own mineral and gem collection as you explore the intriguing world of these minerals and rocks.

Start with General Research  

The internet is your best friend as it is full of information on literally anything and everything, but always make sure you are using reliable sources. Learn about the unique features and characteristics of each mineral so that when you finally come across one, you can easily identify which one it is.

Begin Close to Home 

Since you are a beginner, you don’t have to go to specific places or locations to look for these gemstones. Start close to home and explore your current locale. Learn the geology of your own area and be on a lookout for caches or interesting geological features that might catch your eye.

You are likely to come across different types of rocks that look unusual, have a mix of colors and will be a great addition to your collection.

Join a Mineral Collector’s Club

There are book clubs, movie clubs and meetups both in-person and online where people from different parts of the world come together to discuss their favorite hobbies? 

You can easily find such a group online which you can join and get in touch with people who share your interest and connect with them. That way, you get to learn the many things minerals have to offer, along with tried and tested methods to mineral and gem collection.

These clubs also often list exhibitions and events that you can attend and learn more about how to start your own collection.

Get Your Hands on the Right Tools 

Mineral collection obviously involves some kind of digging and excavating for which you need to get your hands on all the right tools that you will need for creating your collection.

As a beginner, you will just require a few basic tools such as a magnifying glass, safety glasses, gloves, bucket, a small shovel and a box to carry all the minerals and gems that you will find on each trip.

The above tools make an excellent beginner’s toolkit, and since you are just starting out, you don’t need to worry about getting advanced equipment anytime soon. You can keep adding more items to your basic kit once your collection begins to grow, and you become more skilled at different collecting techniques.

Identify Your Findings 

It is very important that you identify all your findings because that way, you will learn all about the features and characteristics of each mineral type that you find. There are two simple ways to go about this.

First, you can put your web searching skills to good use and take help from the online community to help identify your specimens. You can even search for mineral books that list the types of minerals and gems with a geological glossary.

Second, head to the nearest museum in your area and consult a mineralogist who will help you recognize your findings.

Label Your Collection 

To make this entire process even more fun and engaging, you can label your collection by numbering the specimens, giving them unique names, mentioning the locale details, historical significance, as well as noting down the features such as color, texture, etc.

This will not just add to your knowledge, but if one fine day you were to start a career in geology, keeping such records will come in really handy.

Invest In Nice, Quality Boxes to Keep Your Minerals Safe 

It is imperative to keep your gems and minerals extremely safe so you can look for nice, quality boxes, cases or even a display cabinet to store your collection. However, if you wish to be a little creative, you can search for DIY projects and create your own containers. 

The best thing to use for this is egg cartons. They are sturdy, durable and can be easily transformed into attractive containers to hold your specimens. You can paint them and even decorate them with accessories if you like.

When storing your collection, make sure that each mineral or gem is at a safe distance from each other. This is done to prevent them from banging against each other. Some of them are likely to be very fragile, so it is best to have dividers between each mineral.

Beautify Your Collection 

For most collectors, the ultimate goal is to collect enough, which can be displayed later at a geology fair or exhibition, website or even sell them.

If you wish to do the same, you must beautify your collection. One way to do that is to trim all the specimens properly to remove sharp edges and balance their look and feel.

There are numerous trimming tools for fine mineral specimens that will help you make your collection stand out by enhancing their features and appearance. 

Are You Ready to Have Your Own Gem Collection?

Building a gem or mineral collection isn’t really difficult; you just need to be a little inquisitive, adventurous and bring out the explorer from within you.

It is truly a very exciting hobby, and once you have you have a full-fledged collection, you can display your beautiful specimens at different mineral shows and events!

The Layers of the Atmosphere: An Introduction

Illustration of the Earth's atmospheric layers
Photo: Free Images

The world above us is more than just the blue sky. There is a whole host of atmospheric layers that make up our atmosphere. Learning about the stratosphere, troposphere, mesosphere, and thermosphere will help you understand these levels better. So let’s get started! 


Structure of planet Earth with atmosphere layer concept, 3D rendering isolated on white background
Structure of planet Earth with atmosphere layer concept, 3D rendering. Photo: iStock

In the image above, we see the Earth’s inner core, outer core, mantle, upper mantle, crust, and the atmosphere.

The atmosphere can be broken up into several different layers; some of which are further subdivided. The different layers are mainly determined by the wavelength of light measured in each layer. For example, light with a shorter wavelength (blue light) cannot travel as far as light with a longer wavelength (red light).

This article will explore the following topics:

The Troposphere

The troposphere is the first layer of the atmosphere that spans from the Earth’s surface to about 10-18 kilometers. This is where most weather phenomena occur, such as rainfall, thunderstorms, and dust storms. The air temperature in this layer is fairly constant and rarely drops below -40 degrees Celsius or rises above 40 degrees Celsius. This is because the Sun’s radiation is blocked by the Earth’s surface, preventing it from heating the layer above. 

The rate at which the temperature of the atmosphere changes depends on latitude and altitude. The troposphere is thicker at the equator than it is at the poles. Also, it is thicker in the summer than it is in the winter. The troposphere is where water vapor and carbon dioxide are found in large amounts. Water vapor is responsible for the formation of clouds and fog. Carbon dioxide is known to be a greenhouse gas and is responsible for global warming.

The Stratosphere

The stratosphere is the second-highest layer of the atmosphere. It covers a large area extending from 10-36 kilometers above the Earth’s surface. The upper boundary of the stratosphere depends on latitude due to the variation in the amount of incoming energy that causes temperature anomalies in the region.

The temperature of the stratosphere is fairly constant. This is because the Sun’s radiation is being reflected back towards space by the molecules of Nitrogen and Oxygen in this layer. This is why temperatures don’t rise above -80° C up to 15 kilometers above the Earth’s surface. 

The stratosphere is the layer of the atmosphere that is most affected by ultraviolet (UV) radiation from the sun. In this layer, UV radiation is absorbed by ozone molecules, turning them into oxygen radicals. These then react with Carbon Dioxide, forming Trioxynitrous Acid (CNO). This reaction produces Ozone, which is found in the highest concentrations between 7-15 kilometers above the Earth’s surface.

The Mesosphere

The mesosphere is the third layer of the atmosphere. It is a transition layer that lies between the troposphere and the thermosphere. The upper boundary of the mesosphere is 65-80 kilometers above the Earth’s surface. The lower boundary of the mesosphere is the tropopause, which is the dividing line between the troposphere and the mesosphere. 

The mesosphere is very dry, and the air pressure is very low. Temperatures in this layer are between -90 degrees Celsius and -50 degrees Celsius. The mesosphere is constantly being heated by the Sun’s radiation. The thermal energy present in this layer causes it to expand and regularly contract throughout the day.

The Thermosphere

The thermosphere is the fourth layer of the atmosphere. It is the highest layer above the Earth’s surface. This layer is mainly made up of the ionosphere, which runs above it. The upper boundary of the thermosphere is about 500-1,000 kilometers above the Earth’s surface. 

The thermosphere is made up of ionized gas at extremely high temperatures – up to 1,800 degrees Celsius. The extremely high temperatures of this layer are due to the Sun’s ultraviolet radiation and the release of energy from the tops of thunderstorms. The ionized gas in this layer is what causes the auroras and the glowing of the polar regions. It also shields the Earth’s surface from the harmful effects of radiation. The existence of ozone in this layer protects us from the harmful effects of ultraviolet rays.

The Existence of Ozone in the Thermosphere

Due to the extremely high temperatures in the thermosphere, ozone is broken down into Oxygen and Oxygen Radicals when it comes in contact with Hydrogen. However, when ultraviolet radiation from the Sun enters the thermosphere, it collides with different atoms (such as Nitrogen and Oxygen). When this happens, it produces Hydrogen. This Hydrogen then collides with the Oxygen Radicals and combines with them to produce Oxygen. When the Oxygen reacts with the broken ozone molecules, it is transformed into Ozone again. 

This Ozone is transported by winds towards the Earth’s surface and is responsible for the formation of the ozone layer on the Earth’s surface.


The world above us is more than just the blue sky. There is a whole host of atmospheric layers that make up our atmosphere. Learning about the stratosphere, troposphere, mesosphere, and thermosphere will help you understand these levels better. 




Is There Anything Scarier than a Tsunami?

What on earth scares you? (Pun intended).

Many would answer war, hunger, terrorism, poverty and even death. Things like these make the havoc wrecked by natural disasters quite puny. Every once in a while we hear about a cyclone killing hundreds, a volcanic eruption that destroys villages, a severe earthquake that brings mass destruction and death or a tsunami that just sweeps away entire towns along its path.

Natural disasters are a reminder that we are only human. That even the best defenses cannot save us from the forces of nature. And the tsunami happens to be one of the most fascinating natural disasters to study.

A tsunami is a sequence of oceanic waves forming due to an earthquake, a volcanic eruption or a landslide that occurs under the surface of the sea. The underwater world is a mysterious one and yes they do have mountains down there too! There are times, although rare when these waves are the result of the impact of a giant meteor that falls into the ocean.

The waves of a tsunami can reach a height of or more than One Hundred Feet!

Ever wondered what causes a tsunami?

Tsunami is a Japanese word. It translates to “harbor wave” (tsu=harbor + name=wave). The Pacific Ocean has the “Ring of Fire” which is the most tsunami prone region in the entire world, with around 80% tsunamis occurring there – a reason why Japan has a long history of tsunamis.

However, the worst tsunami in history occurred in the Indian Ocean in 2004. It was caused by an earthquake that equates to twenty-three thousand atomic bombs. The waves originating from the core of this tsunami wreaked havoc on the coastal areas of 11 different countries that included India, Bangladesh, Sri Lanka, Thailand, Indonesia, Malaysia, Myanmar, Maldives, South Africa, Kenya and Somalia. The death toll reached a tragic count of 283,000 lives.   

It is observed that the first wave of the tsunami is usually not the most powerful one; the ones that follow gain strength, height and destructive momentum. The average speed of a tsunami has been recorded around five hundred miles per hour – at that speed, it can almost compete a jet plane!

In the United States, the states that are most exposed to the risk of a tsunami include Washington, Oregon, Hawaii, California and Alaska. Out of these states, Hawaii that is most prone to the tsunami. On an average, the state gets at least one tsunami each year and there is a severe one that hits them every seven years. The worst tsunami to ever hit Hawaii was one that occurred back in 1946. It hit the Hilo Island at a speed of five hundred miles per hour with waves as much as thirty feet high!

How Tsunamis are Created (Wikipedia Public Domain)

Tsunamis don’t lose their energy as they travel. They could cross entire oceans without losing their momentum. Unlike other natural disasters, it is possible to predict the estimated time for the tsunami to hit. Scientists can derive that based on a calculation related to water depth, distances and the timing of the cause.


Mighty Tornadoes and What Makes Them So Twisted?

2007 Elie Manitoba tornado
2007 Elie Manitoba tornado

Natural disasters are a grave reminder of how helpless man is against the forces of nature. Tornadoes are just one of the many destructive forces of nature that can uproot you within seconds and throw you around like cardboard chips. Hence, it is important to know and learn about them as much as we can to make sure we are at least better equipped mentally to face the deadly aftermath of this catastrophe.

So what exactly is a tornado?

According to the National Weather Service, a tornado is

“A violently rotating column of air pendant from a thunderstorm cloud and touching the ground”

It is basically a moving column of violent air that is connected with the ground and a cumulonimbus cloud (in most cases) as the same time. In the United States, there are around a 100,000 thunderstorms that form within a year’s’ time; and there are 600 to 1,000 thunderstorms each year that bring tornadoes with them.

Tornadoes can form in almost any state; but the states that are most affected include Texas, South Dakota, Oklahoma, Nebraska, Missouri, Mississippi, Louisiana, Kansas, Iowa, Indiana, Illinois, Georgia, Florida, Arkansas, and Alabama.

So how much do you know about tornadoes? Let’s find out!

These destructive machines of nature are a weather-related event. Normally, a tornado’s path of expected to be around four hundred yards wide and four miles long. But don’t be fooled! Some tornadoes may surprise you with a hundred-mile long path and about a mile wide! They can reach a height of about 60,000 feet – you think the Giant in “Jack and the Beanstalk” would have been that tall or is it just us?

A tornado can move at an average speed of between twenty five and forty miles per hour, but there are some that can chase you at an astounding seventy mile per hour speed. And that’s just the tornado; the winds inside it have a speed of their own – let’s say they can swirl around at almost three hundred miles per hour. There is no way you can beat that!

If we observe the average stay of a tornado on the ground, it is hardly ever more than an interval of about five minutes, but the tornado keeps returning to the ground, and the touchdown could be several times in a row!   

So which direction do these tornadoes move in? Allow us to enlighten you.

Tornado in the Midwest

These tornadoes really have a strong sense of direction – we mean, how else would the tornadoes rotate clockwise in the southern hemisphere and counterclockwise in the northern hemisphere? Also most tornadoes are founding moving to the northeast from the southwest.

Another interesting fact about tornadoes is that a majority of them occur in the time span between 3PM and 7PM. Although these tornadoes occur across the globe in many different countries, United States gets the largest share of them, and they’re also the most destructive ones to occur. On an average, the United States faces almost eight hundred tornadoes each year.

Do you know how many people are killed by tornadoes each year? The figure comes around ONE HUNDRED!

Peanut Wood – A Unique Petrified Wood

peanuts on a wooden table

Peanut wood is a type of petrified wood which is usually black or brown in color. It got its name from the white to cream markings which are about the same size and shape as peanuts. But before we dive into what peanut wood is and how it is formed, it is important to know what petrified wood is. 

Petrified Wood 

Every often, wood decomposes. But in the case of petrified wood, something which is commonly known as “wood converted into stone” occurs. When a tree turns into a fossil, it converts to a three-dimensional replacement of the plant. This happens when the actual organic matter of the tree is replaced by a silicate such as Quartz. As a result, it turns out that a tree is preserved in its original shape but changes its state and turns to stone. 

Petrified wood is not rare. It is often found in sedimentary rocks or volcanic deposits around the world. It is often sold as gemstone and used as decorative material in households. Like all gem material, petrified wood is also associated with many healing properties.

How is Peanut Wood Different from Normal Petrified Wood?

Though peanut wood is a type of petrified wood, it is different from the normal petrified wood. The peanut wood we know today originated in Western Australia as a conifer tree. Over the years, when the trees died, they were carried away by the rivers into the salty sea.

This can be dated back to the Cretaceous time period. Back then, the sea into which the trees were carried was an epicontinental sea. This sea covered most of the continent which we now know as Australia. Also, during that time, there were marine species of clam which survived on wood. As the wood entered the sea, the tiny clam would swim to it and attach themselves over the piece of wood. As it was a source of food, these tiny clams would use their sharp edges of their shell to shave off small particles of wood. Within a few weeks, they could dig many deep tunnels into the wood.

As the tunnels were dug in the tree trunk, it would sink down to the sea floor. Apart from the wood eating clams, other species also survived in the water back in the prehistoric times. One particular species which aided in the formation of peanut wood was radiolarians. These are tiny plankton with siliceous shells which lived above the wood in the water. They generally thrive near the river mouth as they receive a continuous supply of nutrients. As the wood is brought to the sea, the radiolarians continue to live on the wood. But when they die, they usually sink in the water. Since their shells are made up of siliceous elements, they accumulate as a whole sediment.

Deep at the seafloor, there is wood with deep tunnels. Layer after layer, the white sediment from the dead radiolarian accumulates over the wood. Overtime, it enters the holes in the wood log Since the shells are siliceous, some of them get dissolved in the water. This concentrated silica solution enters the cavities of the wood. And then just like normal petrified wood, the organic matter of the tree is replaced with silica. Over a period of time, layers of mud and sand cover the wood and with increasing pressure the process of petrification begins. It is believed that this petrification process occurred around 120 million years ago.   

However, peanut wood is different in appearance compared to petrified wood. Unlike normal petrified wood which closely resembles the original tree but is different in texture, peanut wood has white or cream peanut sized markings formed due to radiolarians occupying the bore holes in the tree. 

Wood Eating Clams Today 

While wood eating clams were common in the Cretaceous period, a few species of wood eating clams still live in the oceans. These wood eating clams are now known as shipworms. These shipworms have posed a threat to wooden boats for quite a long time. As the wooden boat moves around in the sea, these worm-like creatures cling onto the bottom of the boat and create tunnels in the wooden surface. This can cause serious damage especially to smaller wooden boats. 

To overcome this problem, shipbuilders started using thin copper sheets to protect their ships from the damage of shipworms. But despite the measures, shipworms continue to cause structural damage to the ship. 

How Peanut Wood was Found?

Millions of years ago the process of peanut wood petrification began in the region which we now know as Australia. Back then, the region was covered with sea. The seafloor which contained peanut wood was lithified into sedimentary rocks which were then known as Windalia Radiolarite. As the continental formation changed, these sedimentary rocks rose above the surface of the sea. In these rocks, peanut wood was discovered and classified as a gem material. 

As this unique petrified wood was found, it soon became famous due to its distinct appearance. It was then used to make decorative items for households and commercial use. 

Today, gem hunters around the world seek to find Windalia Radiolarite. It is widely sold through online auctions and gemstone websites. It is also displayed at gemstone and mineral exhibitions such as Tucson Mineral Shows. Given the easy access, people around the world can buy this surprising and interesting piece of petrified wood. 


Peanut wood is a gem material found in the sedimentary rocks called Windalia Radiolarite. It is indeed surprising to see an ancient piece of wood that was bored by clams is now a precious gem material with multiple uses. 

What are Lightning Strikes?

Lightning storm in Arizona
  • An average lightning strike contains 15 million volts of energy. 
  • A single strike can heat the surrounding air to over 50,000 o F. 
  • Around 100 lightning strikes hit the Earth every second. That makes around eight million strikes every day. 
  • Unlike common belief, lightning can strike the same place twice. 
  • The phenomena kills an average of 73 people in the US each year. 

Lightning Strike

Every year, people around the world experience three billion lightning strikes but not all make contact with land. If you look at the numbers, as little as 3% of the total strikes touch the surface of the Earth. When they hit the surface, the temperature of the surrounding air rises to around 50,000 o F at that specific instance. Imagine what it can do to the surface it touches! But on a positive note, the temperature rapidly decreases. Scientists have tried a gazillion times to capture the static charges but have not succeeded so far. 

According to some data, every year, around 6,000 people die as a result of lightning strikes. However, National Geographic nullifies the claim and states that not more than 2,000 people die each year.

What is a Lightning Strike and Why Does it Happen?

Lightning is basically an electrical discharge. When there is a thunderstorm, the particles of rain and at times snow particles due to very cold temperatures collide. This friction creates imbalance and in most cases, a negative charge is generated which reaches the lower parts of the cloud. Nature then comes into action to rectify this imbalance. 

As a result, we see lightning. From objects on the ground like trees, steeples, even people to different objects from the surface which create positive charges, all can get affected by a lightning strike. When the negative and positive charges come in contact with each other we see a lightning strike.

As mentioned earlier, a lightning strike can be extremely hot. The temperature of the air surrounding the strike can go as high as 50,000 o F.  This rapid change in temperature causes the air to expand and Bang! We hear the thunder. Since the speed of sound is lower compared to the speed of light, we can see the lightning strike first, then followed by the sound of thunder. 

Types of Lightning

Lightning strikes can be classified according to how they are distributed. They can either be distributed within the clouds or can be between the clouds and the ground. Let’s take a look at each type.

Lightning Within the Clouds 

Lightning within the clouds can be further divided into two types. 

Intra Cloud Lightning  

Intra cloud lightning is the one that happens within just one cloud ball. It generally happens on the outer sides of the cloud. The scenario is the same of negative and positive discharges. But the only difference is it never reaches the ground. 

Inter Cloud Lightning

This type of lightning happens when two clouds come in contact with each other. In scientific terms, different areas in the clouds have different charges. Some are positive while others are negative. Lightning happens when negative and positive charges come in contact. This type of lightning is the most commonly occurring type of lightning. 

Cloud to Ground Lightning 

It is obvious from the name that this is the type of lightning which generates within the clouds but hits the ground. Though it is the least common type of lightning, this is definitely the deadliest form of lightning witnessed by humans on this planet. 

A stepped leader or the negatively charged initiator descends from the top of the cloud. Along the way, more negative charges gather. But when it hits the surface, it results in a major disaster. 

Another way of defining lightning is through the shapes. 

Sheet Lightning

When a lightning strike occurs in just one cloud and lightens up the whole cloud, it is call sheet lightning. It happens mainly in intra cloud lightning. This type of lightning can be very rarely seen in inter cloud lightning.

Heat Lightning

This is the most common type of lightning we all witness. When lightning occurs in the sky within different clouds which come in contact with each other. As a result of interaction of the positive and negative charges, a lightning strike is created. 

Staccato Lightning 

Staccato lightning is a type of lightning which occurs for a very short and brief instance. It looks like a straight line with a single flash similar to a camera flash. On its way down to the surface of the Earth, it also reveals some of its branches. This happens in cloud to ground lightning. 

Forked Lightning

This is also a type of cloud to ground lightning. It is a very simple lightning which has branches and all the branches touch base with the surface but the origin is the same charge.

Ribbon Lightning

This type of lightning is most common during thunderstorms. When the wind is moving fast and with cross winds when the charges come in contact, the process of lightning starts. This causes multiple strikes to hit the surface of the ground, with every strike right next to the other in the direction of the wind. Obviously this again happens during cloud to ground lightning.

Bead Lightning

This is one of the rarest types of lightning. When lightning breaks into different parts and strikes different sections in the same area with no fixed patterns, the system is called bead lightning.

There are a few more types but they are not commonly known and are very rare. In the final section, we will look into the biggest lightning disaster in history. 

The Biggest Disaster Due To Lightning

The biggest disaster due to lightning happened during the times of the French dictator Napoleon Bonaparte.

As the dictator took over a small European country named Luxembourg in the early 1800s, he converted it into his backyard to store arms and ammunition. He constructed a number of bunkers and underground warehouses to stock his weapons and supplies. 

On June 26th 1807, a lightning strike at one of his gunpowder factories in Luxemburg, one of the smallest countries in Europe. This factory was built in a fortress in the southern part of the country in the city of Kirchberg. The fortress was constructed in 1732 and was now being used as an armory to refill the Napoleon forces in the southern part of the country.

Subsequently the factory exploded and immediately killed approximately 300 people in the very same instance. The ammunition depot was destroyed along with the gunpowder factory. 2 blocks of the castle were destroyed, leaving everything living, dead. Several other areas nearby were also burnt and huge quantities of armor were also destroyed. So it can be concluded that what appears to be Nature’s lightning show is something which can be extremely dangerous and deadly.

Acid Lakes – A Unique Geological Landscape

An acid lake

What are Acid Lakes?

Generally, lakes are considered to be a source of fresh water. How fresh is your water? Or more specifically, for the benefit of this article, how fresh is lake water?

All water is measured by a scale called ‘pH’, which determines how much of a unit of water is acidic and the acidity rating (pH) is determined by how much hydrogen is in that unit of water.

There is no indication that a reasonable amount of acidic water is bad for you however; indeed, it may have a number of benefits, including being used as a disinfectant and in this world of coronavirus, it may be advantageous to help keep your house and food clean.

The pH range goes from 0 to 14, with 7 being neutral (no acidic content), so pHs of less than 7 indicate acidity. But that does not always mean that water everywhere around the world has a pH of seven. Instead, the pH level in many lakes and rivers are between six and nine.  

But there are certain water systems where the pH of water is less than five. This means that they are acidic and this can be a result of various reasons, but mainly, one can classify them into two main causes. 

  1. The first reason will be the presence of acids in the water or there has been an inflow of acids from some external sources. This occurs when acidic industrial waste is dumped into the rivers and lakes which eventually increases the acidity of the water. Another external source would be acid rain in the region. 
  2. The second reason is simpler. There is a lack of alkaline bases in the water stream.

Acid lakes are often located near areas of granitic bedrocks, siliceous bedrocks and active volcanoes. Certain areas which are marked by researchers as areas which receive acid rain are also some of the common sites of acid lakes. The eastern parts of the US are considered to be areas that receive a high content of acid rain which disturbs the natural alkaline balance in the lakes.

Acid Lakes Around the World 

Some of these lakes are so acidic that the water is strong enough to dissolve a person’s skin. But one of the largest acid lakes is located in Indonesia. Unlike other acid lakes, this lake has turquoise waters that appear to be calm and serene but are actually highly acidic. 

Ijen Volcano, Java 

This volcano complex is located on the border between Banyuwangi regency and Bondowoso regency of East Java. The Gunung Merapi is the highest point of that complex. This name means mountain of fire in the local language. Among this volcano complex is the Kawah Ijen volcano which is a famous tourist attraction. The reason for it being famous is the electric blue glow that comes out of it. The reason for this is the constant sulfuric gas which is present in the volcano. When the gas comes in contact with oxygen in the air, a stunning blue glow is produced. 

Apart from the blue glows, the most important thing which the crater is known for is the world’s largest acid lake it holds. The lake is turquoise in color. It has a yellow tinge to it that makes it even more beautiful. This yellow is basically due to the presence of high sulfur content. On the pH scale, the pH of water in this lake is as low as 0.3 which means it is extremely acidic. You can compare the acidity of this water by the fact that lemon juice has a pH of 2 whereas the pH of water of a car battery is 1. 

It is a crater lake inside around a 12 miles crater in East Java. It lies between the Ijen Volcano Complex which is a group of stratovolcanoes with a long history. The lake around the crater is around 600 feet deep and holds around 1,130 cubic feet of turquoise water. Due to the high acidity of the water, the water is not suitable for drinking purposes and has a pungent, bitter taste. 

However, the lake remains a famous tourist attraction. Though one cannot swim in it, tourists often visit this place to watch the 15 natural waterfalls which connect with this lake and there is a cruise also allows tourists to take a tour of the lake and connecting rivers. However, it is extremely important to take precautions as you cruise through the lake. The high acidity can cause severe allergic reactions on the skin and eyes. In some cases, it can also result in respiratory issues. 

The extreme acidity has affected the nearby river water including river Banyu Pahit. When the water from this lake joins the Banyupahit River, it changes the pH level. According to research done in 2017, it is in a bracket of 2.5 and 3.5 pH on average. There is also a high amount of metal particles such as iron and aluminum. Though the river water is less acidic compared to the lake, it is still not safe for human consumption without treatment. 

The government in Indonesia has taken steps to reduce the acidity of the water. They are using techniques such as filtration and reverse osmosis to increase the pH level of the river. This is done to ensure that the negative impact of acidic water can be minimized. 

As mentioned earlier, the reason for the high acidity of this lake is the presence of high sulfur content. This sulfur provides a source of income to the local population. In fact, most of the locals are associated with sulfur mining. 


There are many other acid lakes spread throughout the world but Ijen volcano Crater Lake is the most acidic lake known on this planet. While the water of the lake is not suitable for irrigation or human consumption, it is a source of employment for hundreds and thousands of people associated with sulfur mining.