Rock and Mineral Worksheet featuring questions on rock types, formation, and identification with visual examples.

Problem: Solve the worksheet questions related to rocks and minerals.

#### Q.1: Write T (True) or F (False) if the statement is false.

1. Rocks don't change.
- False (F)
Rocks can change over time due to processes like weathering, erosion, heat, pressure, and chemical reactions. This is the basis of the rock cycle.

2. Rocks are composed of minerals.
- True (T)
Rocks are aggregates of one or more minerals. Minerals are the building blocks of rocks.

3. Rock types are unrelated to each other.
- False (F)
Rock types are interconnected through the rock cycle. Igneous rocks can form sedimentary rocks, which can then transform into metamorphic rocks, and so on.

4. Minerals are organic materials found in nature.
- False (F)
Minerals are inorganic solids with a definite chemical composition and crystalline structure. Organic materials are derived from living organisms.

5. There are three basic types of rocks: igneous, sedimentary, and metamorphic.
- True (T)
The three main categories of rocks are indeed igneous, sedimentary, and metamorphic.

Answers for Q.1:
1. F
2. T
3. F
4. F
5. T

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#### Q.2: Fill in the blanks with suitable words.

a) __________ is molten rock beneath the surface of the Earth.
- Magma
Magma is molten rock beneath the Earth's surface. When it reaches the surface, it is called lava.

b) Wind, water, and gravity can cause rock to break down into fragments. These fragments are called __________.
- Sediments
Sediments are the fragments of rocks that result from weathering and erosion.

c) The term __________ comes from Greek words meaning "to change form."
- Metamorphism
Metamorphism refers to the process by which rocks change form under heat and pressure.

d) Minerals are made up of __________.
- Elements
Minerals are naturally occurring inorganic solids with a definite chemical composition and crystalline structure. They are made up of elements.

Answers for Q.2:
a) Magma
b) Sediments
c) Metamorphism
d) Elements

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#### Q.3: Which one of the following is not a sedimentary rock?

- a) Conglomerate
- Conglomerate is a sedimentary rock formed from rounded pebbles cemented together.

- b) Granite
- Granite is an igneous rock, not a sedimentary rock. It forms from the cooling of magma below the Earth's surface.

- c) Mudstone
- Mudstone is a sedimentary rock formed from compacted mud.

- d) Limestone
- Limestone is a sedimentary rock formed from the accumulation of calcium carbonate (often from shells and other organic material).

Answer for Q.3: b) Granite

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#### Q.4: Which one of the following is not an igneous rock?

- a) Obsidian
- Obsidian is an igneous rock formed from rapidly cooled lava.

- b) Basalt
- Basalt is an igneous rock formed from lava that cools quickly at the Earth's surface.

- c) Schist
- Schist is a metamorphic rock, not an igneous rock. It forms from the metamorphism of shale or slate under high pressure and temperature.

- d) Granite
- Granite is an igneous rock formed from slowly cooled magma below the Earth's surface.

Answer for Q.4: c) Schist

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Final Answers:

1. Q.1:
- 1. F
- 2. T
- 3. F
- 4. F
- 5. T

2. Q.2:
- a) Magma
- b) Sediments
- c) Metamorphism
- d) Elements

3. Q.3: b) Granite

4. Q.4: c) Schist