What is magma and lava?

What is Magma?

Ans:- Due to enormous pressure and temp erature the substance of the earth's interior remain liquid, being mixed with gas and vapour is called magma.

Short Ans:- molten rock material inthe earth 's interior is known as magma

What is lava?

Ans:- When hot molten magma of the earth's interior, comes out through the cracks and joints on the earth's surface, it is called lava As temperature rises a substance melts into liquid and increases in volume. On the other hand, when pressure increases, there happens to be a severe contraction in the same volume of mass. Both pressure and temperature are incredibly high in earth's interior.

Short Ans:- when this magma comes out to the earth's surface, it is as lava.

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What is geothermal energy? by research studys

What is geothermal energy? Answer: It is a type of energy.The temperature of the earth's core waves outward. This thermal power is known as geothermal energy. Many countries of the world produce electricity from this thermal power. Iceland meets upto 30% of the total energy requirement from geothermal energy. The U.S.A produces highest amount of electricity in the world from geothermal energy. Electricity production from geothermal energy reduces the use of fossil fuel (coal, petroleum).

What is density and density of the earth.

What is density ? Density of a matter is its mass per unit volume. It is measured by the measure of its mass contained in one cubic centimetre of its volume. Density of a matter gives us an idea of how close, or how far apart, its molecules are. An iron plate feels heavier than an aluminum plate of the same volume, simply because iron is denser than aluminum.

How to make your own volcano plastic tapes, newspaper by research studys

How to make your own volcano - Take one cardboard, a long thin can, plastic tapes, newspaper, gum, sand or ash, coloured paper, a little amount of vinegar and soda water. Stick the can to the middle of the card board with the help of tape. Make a cone by pasting that newspaper on all sides of the can. Then cover the outside of the volcano with aluminium foil or coloured paper. You may spread sand/ash on it with gum. Your volcano is more or less ready. Now for volcanic eruption pour some vinegar and soda water into the can. Give some red colour into it. You can watch red lava is coming out from your volcano.

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