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Science

How to weld plastic?

Oct 2nd, 2008 | Category: Science

Plastics can be joined or welded together in many ways. One is with electrical welding leister. Generally the plastics products used in cars, bikes and other vehicles are thermoplastics so they can be easily molded or welded. Some manufacturer marks code for material identification like ABS, PP. Leister 100.726 can easily weld the cracks, working [...]



Why is recycling plastic important?

Oct 1st, 2008 | Category: Science

Plastics are used in wide range of things. So it is produced in a very huge amount and its convenience is undeniable. Recycling of plastic is very important because it is made from the oil which will cause the regular depletion of this limited resource. With the recycling of plastic we can save oil and [...]



How deep is the Pacific Ocean?

Sep 30th, 2008 | Category: Science

Pacific Ocean is the largest of all the water bodies on the earth. It has got its name from a Latin word “Mare Pacificum” which means “peaceful sea” given by Ferdinand Magellan a Portuguese explorer.
Pacific Ocean is 12999 meters deep. The deepest point in the Pacific Ocean is in the Mariana Trench. It is in [...]



Which vitamins are good for the skin?

Sep 29th, 2008 | Category: Science

Vitamins play very important role in maintaining and repairing skin health. The most important vitamins for the skin are vitamin C and vitamin E.
Vitamin C and E
Vitamin C and E protects the skin from cancer when it remains in sunlight for a long time. Free radicals (a by product of sunlight), dust particles and pollution [...]



How is plastic made?

Sep 29th, 2008 | Category: Science

Polymers are primarily made up of carbon, hydrogen and oxygen. They are the long chains which repeat themselves again and again.
Many steps are evolved in the production of plastics
Polymerization
Most common raw material required for the manufacture of plastics is oil and natural gas but they are also processed from corn and other biomass. First of [...]



What is plastic?

Sep 29th, 2008 | Category: Science

Plastics are a type of polymer or synthetic which is much like resins found in plants and trees. Polymers are made up of carbon string and other substances. The units in every string are called monomers. These monomers when goes through chain linking reaction then carbons join with each other forming polymer. According to dictionary [...]



What are the affects of global warming?

Sep 27th, 2008 | Category: Science

Global warming is the trapping of heat on the earth surface due to the rise in temperature caused by transportation, burning of fossil feul, emission of gases from the factories etc. It affects in many ways to all the living beings on the earth.
Natural disaster
Global warming can cause more serious, frequent and strong storms, tornadoes, [...]



What is the cause of global warming?

Sep 24th, 2008 | Category: Science

Global warming is the increase in temperature of earth due to greenhouse gases like carbon dioxide CO2 which causes nine to 26 percent of greenhouse effect, water vapors has 36 to 70 percent and methane CH4 has four to nine percent. These gases are useful up to a limit to make planet habitable but excess [...]



What are the ways to prevent global warming?

Sep 23rd, 2008 | Category: Science

The main causes of global warming are greenhouse gases which are released into the atmosphere through various human activities. We can take many steps to reduce global warming.
On roads
Carbon dioxide is released into the air by the burning of fuels which contribute in the climate change. This can be reduced by improving fuel efficiency of [...]



What is global warming?

Sep 23rd, 2008 | Category: Science

Global warming is one of the burning issues nowadays. It is the natural warming of the atmosphere (as well as natural cooling). These days global warming refers to the gradually increasing temperature of the earth due to the greenhouse gases like carbon dioxide, methane and nitrogen that are accumulating in the earth’s atmosphere and increasing [...]



How does the telephone work?

Sep 22nd, 2008 | Category: Science

The easiest way to contact a person is to pick up the phone, dial a number and you can have the conversation with that person even if the person is many miles away or anywhere on the earth. Nearly 100 years back you have to write a message or letter which reaches in days but [...]



How many different vitamins are there?

Sep 21st, 2008 | Category: Science

The word vitamin is made from the words “vitamine” which means “vital amine”. These are the organic compounds found in a small amount in the food and perform a particular function in cells and tissues. Vitamins react with enzymes and produce the energy from the food and also help in many chemical activities of the [...]



What are the functions of protein?

Sep 21st, 2008 | Category: Science

Protein performs many functions in our body. Our body is 45 percent of proteins. It is a very important substance for our bodies which help in growth, repair and protection. Functions of proteins are very much dependent on the molecular structure.
It performs many functions in the body
1) It acts as the enzymes which are catalysts [...]



What is protein synthesis?

Sep 19th, 2008 | Category: Science

Protein is a group of complex organic molecules which consist of carbon, oxygen, hydrogen, nitrogen, sulfur and also have the one or number of amino acids chain. The word synthesis means that when smaller molecules come together to form a larger molecules. Similarly protein synthesis is a process in which small amino acids molecules put [...]



What is protein?

Sep 18th, 2008 | Category: Science

Protein word is taken from a Greek word “prota” which means “primary importance”. Jons Jakob Berzelius, a Swedish scientist gave it a name in 1838 but the important role of protein was fully appreciated after 1926.
Proteins are the primary substance of living organisms as it provides the molecular machinery to the cells of living organisms. [...]



How is snow formed?

Sep 18th, 2008 | Category: Science

Water on earth remains in a constant cycle. It moves from the ocean, seas, rivers, gets evaporated, goes into the atmosphere and again comes back to the earth in the form of rain, snow, hail etc. Snow is always formed in the cold clouds because their temperature is low, generally below freezing point. So [...]



How much water should a person drink a day?

Sep 17th, 2008 | Category: Science

Water is a very essential element to make life possible on earth. Without water we cannot imagine life. It is next to air for the survival. Our body needs water for many purposes. We can live without food for nearly two months but without water only for few days. If we will be deprived of [...]



Why do cats bite their nails?

Sep 16th, 2008 | Category: Science

Some cats have the bad habit of biting their nails same as in the human beings. It is mainly because of anxiety, stress tension and conflict. Same can be the reason for the cat’s bad habit of biting nails. Cats do not chew their nails all the time they do it more or less continuously.
You [...]



Why does water ripple?

Sep 16th, 2008 | Category: Science

When a stone is thrown in the water say pond, tank etc. you have noticed that many small waves of water are formed which moves away from the point where stone hits the water. These are known as ripples.
Water in liquid state is not fixed sheet so it can easily change the shape. When a [...]



Why an egg floats in salty water?

Sep 16th, 2008 | Category: Science

You have always noticed that an egg sinks in the fresh water or plain water while it starts floating in the salt water this because when you add salt to the water you are adding more molecules to the water. Earlier the molecules were apart from each other but now salt molecules have occupied some [...]