Why Does Copper Turn Green?
Though copper is well known as a metal that resists the effects of exposure to the air and to salt water (because of the salt), it does have an interesting characteristic when this exposure occurs. ...
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Why Isn’t Pluto A Planet Anymore?
For decades, students from elementary school on have been taught that Pluto was a planet, one of the ten largest bodies that move in direct orbits around the sun. This was common and accepted knowledge ...
Read MoreHow Does Food Get Cooked Quickly In A Pressure Cooker?
Pressure cooker is the most common and useful appliance, used in modern kitchen. It is capable of cooking different varieties of food in a short period of time, which instead saves fuel as well as ...
Read MoreWhy Is The Statue Of Liberty Green?
Common knowledge indicates that the simple explanation is: copper. A closer look shows that, according to scientific research, the salts in copper have this blue/green color. One theory about the Statue of Liberty is that ...
Read MoreWhy Is The Sky Blue? WG
When we look at the sky on a “sunny” day it appears to be blue. But we can’t accurately say that the sky is blue! When we stand outside and look at the night sky ...
Read MoreWhy Can’t We Fly Like Birds?
The answer to this question is clear. We do not have wings like birds, therefore it is impossible for us to fly like them. But this problem is not explained properly by this answer because ...
Read MoreWhat Is Live Stock?
Live stock is defined as a use of domestic animals so that house hold products like food, textiles, labor can be obtained. It includes horses, pigs, cows, sheep etc. Man and live stock have existed ...
Read MoreHow Does A Thermos Flask Keep A Hot Thing Hot And A Cold One Cold?
Thermos flak is also called a vacuum flask. It is used for keeping the hot liquid like milk and tea hot for long time and cold items like water and ice cold for long time. ...
Read MoreWhy Does Iron Get Rusty?
When the tools like screw driver, hammer etc. made of iron are kept in wet or damp places for sometimes, a brown colored layer gets deposited over these tools. This brown layer is called the ...
Read MoreWhat Is Mitochondria?
These are membrane bound organelle which liberates energy. They are known as power houses. ATP is the most common form of liberation of energy. They have their own DNA. They constitute nearly one fifth of ...
Read MoreWhat Is Bacteria?
Bacteria are minute, microscopic and unicellular organisms. They are of primitive type and are present everywhere. They were the first living organism and we come in contact with them in everyday life. We are familiar ...
Read MoreWhat Is Photosynthesis?
Photosynthesis is not something that just happens in a few seconds and is complete. It goes on throughout the day and even into the night hours. This is an ongoing process in which plants use ...
Read MoreWhat Is Fungus?
Fungi are achlorophyll and avascular organisms which provide connecting link between plants and animals. They were earlier placed among plants but their position was controversial. It is hard to categorize generalized features of fungi. As ...
Read MoreHow Does Sound Travel From One Place To Another?
All that we hear with our ears is called sound. Scientifically, sound can be defined as disturbance which creates sensation of hearing in our ears. Sound is also a type of energy, like heat and solar ...
Read MoreIs There Any Material Which Does Not Burn In Fire?
A substance gets burn and changes to ash, if we put it in fire. But there is a material which does not burn in fire known as asbestos. The fireman when enters the burning house, ...
Read MoreHow Does Recycling Affect The Environment?
Most people would agree that recycling not only affects the environment but it also makes the world a better place for plants and animals. For example, recycling paper products can, in the long run, preserve ...
Read MoreHow Does Mining Affect The Environment?
There are really a couple of major effects that mining can have on the environment. One is “internal” and one is “external.” The first has to do with deep mining and the empty spaces left ...
Read MoreHow Do Hurricanes Form?
Meteorologists and other scientists who study weather and storms have uncovered a lot of the details about hurricanes. They know much more about how they form than they did a few years ago. But when ...
Read MoreHow Do Fireworks Work?
Fireworks come in many different shapes, sizes and colors. But most of them have the same basic system that makes them work. Everything from the smallest sparkler to the largest aerial “bombs” that we see ...
Read MoreHow Many Moons Does Venus Have?
Venus doesn’t have moons. But that isn’t the end of the discussion. The interesting thing about this lack of moons is that other planets do have moons. So, why doesn’t Venus have objects orbiting it, ...
Read MoreWhat Is Genome Mapping?
Improvement in medical and research technology in the past few years has brought genome mapping to the forefront in several crucial areas. The basis of this process is a “map” of the genetic structure of an ...
Read MoreWhat Is Global Warming?
In all the encyclopedias and schoolbooks that deal with science, biology, the environment and natural resources, global warming is one term that describes exactly what is happening. The globe (planet Earth) is getting warmer in ...
Read MoreWhat Is Emissions Trading?
In the past 40 years, an increasing number of people have shown interest in protecting the environment and preserving the natural resources of the Earth. Part of this effort has been devoted to limiting and ...
Read MoreWhat Is Environmental Impact Assessment (EIA)?
In the past 40 years, interest in protecting the environment and preserving natural resources has been a major issue. The impact that construction of any type may have on the land, vegetation and animals has ...
Read MoreWhat Is DNA?
One scientist categorized DNA as the “stuff of life.” The initials stand for deoxyribonucleic acid and this essential nucleic acid is most certainly the stuff that makes life possible. It holds the “instructions” that guide ...
Read MoreWhy Do Different Colors Absorb Different Amounts Of Heat Energy?
The answer to this question may come from a simple conversation about whether to wear light-colored clothing or dark-colored clothing during an outdoor adventure. Nearly everyone has learned that lighter colors and white reflect the ...
Read MoreWhy Are People Cutting Down Rainforests?
It may be hard to understand if you are a person who cherishes the natural resources of the Earth, but people cut down rainforests because of the money. Of course, there are several categories under ...
Read MoreHow Pollution Is Damaging Taj Mahal?
Built 350 years ago by the Mogul emperor Shah Jehan as a mausoleum for his wife Mumtaz Mahal, the Taj Mahal was built of marble, jade, turquoise, lapis lazuli and other precious stones. But its ...
Read MoreWhy Do Planets Circle The Sun?
Perhaps there is a simple answer to this basic question. Maybe planets circle the sun because they have to. But some people want to know more than this simple law of physics. They want to ...
Read MoreWhat Are Sun Spots?
Spots that appear on the sun are not truly spots on a solid surface in the sense that we understand them. Since scientists believe the sun is a massive collection of burning gases (at least ...
Read MoreHow Was Universe Created?
No less an authority than the brilliant Stephen Hawking once said that the universe “popped” up spontaneously from nothing. Hawking himself stated that this is not proven and added that it may take eternity to ...
Read MoreWhat Are The Ways To Prevent Global Warming?
The answer to this question comes in many, many parts, since there are dozens of small things that can be done to help slow global warming. Some argue that we will never be able to ...
Read MoreWhat Can We Do To Preserve The Forest?
Some might argue that the answer is quite simple: stop cutting the trees down and that alone will protect the forest. But there are a lot of people on the other side of the issue ...
Read MoreWhat Causes An Ocean Trench?
Ocean trenches are the deepest part of the ocean floor and the part of the Earth’s surface that is closest to the center of the earth. This makes them unique and quite interesting to oceanographers, ...
Read MoreWhy An Egg Floats In Salty Water?
Most of us have performed simple science experiments in elementary school. These basic activities can teach us a lot about how the world works. Making an egg float in water is one of the experiments ...
Read MoreHow To Read Body Language?
The subject of body language has spawned dozens of books and learning seminars in the past few decades. For many people, the ability to accurately “read” the way a person stood, sat, held their head, ...
Read MoreHow Was The Earth Formed?
This is a fascinating question that has occupied men and women for centuries. There is some important geological evidence that can help us understand how this planet, and the others, came to orbit the star ...
Read MoreHow Was The Moon Formed?
It would be accurate to say that the moon is part of the same material that forms every other celestial body in the solar system. The Earth, the other planets and the sun were all ...
Read MoreHow Are Plastic Bags Made?
The word “plastic” covers a lot of different items and materials, though most people are familiar with the thin but strong type of plastic that is used to produce plastic bags. After the basic chemical ...
Read MoreHow Does Stress Affect The Brain?
Some doctors and medical researchers have approached this question by asking it in a slightly different way. They have started by asking if stress actually does affect or change the brain. The answer is “Yes.” Studies ...
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