1What is the earth made of?
2What is a rock?
3Mention in brief the process by which rock is formed.
4Give the reason: small pieces of rock are found in soil.
5Is it possible to make rock in a factory? Explain your answer.
6On what basis are rocks classified into three groups? Name the three.
7What is the difference between a mineral, a rock and soil?
8Why does the rock at the summit of Sagarmatha tell us that the place was once under water?
9Of the five properties in Activity 11.2, which tells you most about how a rock was made?
10Why is a unit called The Earth and Universe started with rocks?