Soil Erosion

1. 1. When is wind an agent of soil erosion?

• a. When it presses down rocks

• b. When it stops picking up rocks

• c. When it breaks rocks into pieces

• d. When it blows rock pieces to other places

2. 2. Landslides on mountain slopes show the force of?

• a. gravity

• b. running water

• c. runoff

• d. wind

2. 3. What makes the water muddy after a heavy rain?

• a. The rain pour dirty water

• b. The pebbles picked up by water

• c. The rain makes muddy rain-fall on the ground

• d. The soil and sand are mixed with water and carried by it.

4. 4. Which of the following shows that soil erosion is caused by animals?

• a. Sandstorm

• b. Hen is digging the soil

• c. Root of plants are growing

• d. Construction workers are building a housing project.

5. 5. All of these are causes of soil erosion except one.

• a. people

• b. sun

• c. water

• d. wind

6. 6. Which of the following is a TRUE statemenet concerning the process of soil erosion?

• a. It is the wearing away of soil

• b. It is made up entirely of weathered rocks and minerals

• c. It is made up entirely of organic materials, such as rocks and minerals

• d. All of these are TRUE

7. 7. Which factors of erosion occurs when the raindrops falling on the soil exert pressure with thier weight?

• a. Sheet

• b. Splash

• c. Water

• d. Wind

8. 8. What is the movement of rock fragments and soil from one place to another?

• a. Deposition

• b. Erosion

• c. Glacier

• d. Weathering

9. 9. Which is NOT a factor of erosion?

• a. glacier

• b. gravity

• c. volcano

• d. wind

10. 10. This shows that soil erosion is caused by splash?

• a. sand storm

• b. mass movement

• c. water immediately sinks into the soil

• d. rain drops falling on the soil cause pressure