Metamorphic Rocks Questions

A rock is a naturally occurring collection of minerals, mineraloid matter, or solid mass. There are many types of rocks in the environment. Rocks are classified into sedimentary rocks, igneous rocks and metamorphic rocks.

Igneous rocks are created when the magma or lava in the Earth’s crust cools near the seabed or on the ground. Sedimentary rocks are created by the lithification of sediments or diagenesis, where the turn is created by transport, deposition and weathering processes. Metamorphic rocks are created when the existing rock is transformed into new types of rock through a process known as metamorphism. Here, the heat and pressure change the parent rock into a new rock.

Common metamorphic rocks are quartzite, phyllite, marble, gneiss, and schist. Metamorphic rocks are classified into foliated metamorphic rocks and non-foliated metamorphic rocks.

Foliated metamorphic rocks have a banded or layered appearance produced by exposure to high pressure and heat—examples: slate, schist, gneiss, and phyllite.

Non-foliated metamorphic rocks do not have a layered or banded appearance—examples: novaculite, hornfels, marble, skarn, and quartzite.

Read more: Types of rocks

Important Metamorphic Rocks Questions with Answers

1. Existing rock is transformed into new rock through the process of _____

1. Hybridization
2. Polymorphism
3. Metamorphism
4. Rock building

Answer: c) Metamorphism

Explanation: Metamorphism is when the existing rock is transformed into a different rock with a change in mineral composition or texture.

2. _____ is the highest rank of coal.

1. Marble
2. Anthracite
3. Skarn
4. Slate

Answer: b) Anthracite

Explanation: Anthracite is the highest coal rank and is also known as hard coal and black coal.

3. Which is not a metamorphic rock?

1. Basalt
2. Quartzite
3. Slate
4. Hornfels

Answer: a) Basalt

Explanation: Among the options, basalt is a type of igneous rock.

4. Which metamorphic rock is widely used in building construction?

1. Slate
2. Hornfels
3. Marble
4. Options b and c

Answer: d) Options b and c

Explanation: In the architecture and beautification of buildings, hornfels and marbles are used widely.

5. Choose YES or NO: Is limestone a type of rock?

1. YES
2. NO

Answer: a) YES

Explanation: Limestone is a sedimentary rock made of mainly calcium carbonate or the double carbonate of calcium and magnesium.

6. Choose the correct answer: Hornfels are _____ rocks.

1. Foliated metamorphic
2. Non-foliated metamorphic

Answer: b) Non-foliated metamorphic

7. Which among the following is a blue coloured rock.

1. Hornfels
2. Marble
3. Lapis Lazuli
4. Slate

Answer: c) Lapis Lazuli

Explanation: Lapis Lazuli is a blue coloured metamorphic rock. It is also known as Lapis and is used as a gemstone.

8. Sedimentary rocks have distinctive _____.

1. Layering
2. Marking
3. Colouring
4. Pattern of growth

Answer: a) Layering

Explanation:

9. Which among the following is a non-foliated metamorphic rock?

1. Slate
2. Schist
3. Quartzite
4. gneiss

Answer: c) Quartzite.

Explanation: Quartzite is a non-foliated metamorphic rock among the following options.

10. How are igneous rocks formed?

When the magma or lava in the Earth’s crust cools near the seabed or on the ground, igneous rocks are formed.

Practice Questions

1. Define metamorphic rock.
2. What are non-foliated metamorphic rocks?
3. Give three examples of foliated metamorphic rock.
4. How are metamorphic rocks formed?
5. What are the types of rocks?

Watch the video to learn about sedimentary, igneous and metamorphic rocks.