Science Review

1) Small pieces of rock carried away by water is called an ________________.

• a) erosion
• b) drought
• c) flood

2) Large amount of water that covers normally dry land is called a ____________.

• a) flood
• b) drought
• c) fire

3) When there is not enough rain for a long time, _____________ occurs.

• a) drought
• b) rain
• c) erosion

4) A beaver building a dam is an example of how animals affect the __________.

• a) environment
• b) food chain
• c) flood

5) A change in the environment can cause an animal to lose its ____________ .

• a) habitat
• b) disease
• c) pollution

6) When two or more pieces of Earth's crust push together, they form a _________.

• a) erosion
• b) forest
• c) mountain

7) The weather report says that some parts of the country should expect heavy rainfall for the next two weeks. How might this affect the environment?

• a) A drought will cause some of the plants to die.
• b) Flooding will cause some animals to move away.
• c) An earthquake will destroy some buildings.

8) The outer layer of the earth and it is made of solid rock is called _________.

• a) mantle
• b) crust
• c) inner core

9) A part of Earth's surface that is formed naturally is called a ___________.

• a) habitat
• b) landform
• c) inner core

10) The low land between mountains and hills is called a ____________.

• a) Canyon
• b) Valley
• c) Sea