Social Sciences, asked by vm917825, 7 months ago

D. Long Answer Type Questions.

1. How many types of rocks are there? Name and explain each with examples.

2.Which metals are used to produce nuclear energy?

3. Which metallic ore is most important for industries?

4. What do you understand by rock cycle? Explain with the help of a diagram.

5.What are the different uses of rocks?

Answers

Answered by vilaspitale1

Answer:

1. Three Types of Rock. Part of Hall of Planet Earth. There are three kinds of rock: igneous, sedimentary, and metamorphic. Igneous rocks form when molten rock (magma or lava) cools and solidifies.

2. Uranium is the fuel most widely used by nuclear plants for nuclear fission. Uranium is considered a nonrenewable energy source, even though it is a common metal found in rocks worldwide. Nuclear power plants use a certain kind of uranium, referred to as U-235, for fuel because its atoms are easily split apart.

3. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire.

4. The process of transformation of rocks from one form to the other in a cyclic manner is known as the rock cycle. It includes the following processes: Hot lava cools down to form igneous rocks. Igneous rocks are then broken down into small particles which are transported and then deposited.

5. Rocks are used for many purposes but some of them that we can see in our daily life are cited below :

Making Cement (Limestone) (Sedimentary Origin)

Writing (Chalk) (Sedimentary Origin)

Building Material (Sandstone) (Sedimentary Origin)

Bath Scrub (Pumice) (Igneous Origin)

Kerb Stone (Granite) (Igneous Origin)

Roofing Material (Slate) (Metamorphic Origin)

Statue/Ornaments/Decoration (Marble) (Metamorphic Origin)

Valuable source of minerals (Gold, Diamond, Sapphire e.t.c)

Some rocks acts as tourist attraction sites.

Explanation:

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Answered by Anonymous

1) There are three types of rock : igneous, sedimentary, and metamorphic.

Igneous rocks form when molten rock (magma or lava) cools and solidifies. Examples of igneous rocks are diabase, diorite, gabbro, granite, pegmatite, and peridotite.

Sedimentary rocks originate when particles settle out of water or air, or by precipitation of minerals from water. They accumulate in layers. Examplrs of sedimentary rocks are sandstone, limestone, and shale.

Metamorphic rocks result when existing rocks are changed by heat, pressure, or reactive fluids, such as hot, mineral-laden water. Examples of metamorphic rocks are phyllite, schist, gneiss, quartzite.

2) Uranium is the fuel most widely used by nuclear plants for nuclear fission. Uranium is considered a nonrenewable energy source, even though it is a common metal found in rocks worldwide. Nuclear power plants use a certain kind of uranium, referred to as U-235, for fuel because its atoms are easily split apart.

3) The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire.

4) The process of transformation of rocks from one form to the other in a cyclic manner is known as the rock cycle. It includes the following processes:

Hot lava cools down to form igneous rocks. Igneous rocks are then broken down into small particles which are transported and then deposited. This results in the formation of sedimentary rocks. When igneous and sedimentary rocks are subjected to great heat and pressure, they change into metamorphic rocks. Metamorphic rocks under heat and pressure breakdown and form hot lava.

This hot magma then again cools down and forms igneous rocks and the cycle is repeated.

5) Rocks are used for many purposes but some of them that we can see in our daily life are cited below :