Unit 6 lesson 1 What changes Earth? G2

Which of these can help stop erosion?

• A. earthquakes

• B. floods

• C. trees

Which change can be stopped by plants?

• A. a drought

• B. an earthquake

• C. erosion

Which would make erosion happen faster?

• A. plant trees

• B. grow grass

• C. cut down trees

Look at this picture.

How fast does this event change Earth’s surface?

• A. Earth’s surface changes slowly.

• B. Earth’s surface changes quickly.

• C. Earth’s surface does not change.

Look at these pictures. Which change takes a long time?

• A

• B

• C

What is one effect of a drought?

• A. Buildings shake.

• B. Roads are washed out.

• C. Streams and ponds dry up.

What does this picture show?

• A. a drought

• B. an earthquake

• C. a volcano

Rain causes rivers to overflow. What is this called?

• A. a drought

• B. a flood

• C. a volcano

Wind and water break up large rocks into smaller ones. What is this called?

• A. erupting

• B. flooding

• C. weathering

Moving water changes the land by carrying rocks and soil to new places. What is this called?

• A. a drought

• B. an earthquake

• C. erosion