The Effects of Soil Erosion 1

What is a common cause of soil erosion as depicted in the image?

• Earthquakes

• Volcanic eruptions

• Rain

• Snowfall

What does topsoil contain that is crucial for plant growth?

• Only water

• Rocks and pebbles

• Most of the soil's organic matter and plant nutrients

• Artificial fertilizers

What is the process by which soil is moved called?

• Deposition

• Erosion

• Condensation

• Photosynthesis

Which human activity is mentioned as a cause of soil erosion?

• Deforestation

• Construction

• Mining

• Overgrazing

What is a soil profile?

• A. A method to test soil pH.

• B. A type of soil used in pottery.

• C. Top layers of a soil profile are nutrient rich for plant growth.

• D. A machine used to dig soil.

What does erosion do to the earth's surface?

• It adds soil to the surface

• It creates new soil layers

• It wears away the surface

• It increases land fertility

What are three natural causes of soil erosion?

• Earthquake

• Wind

• Urban development

• Farming

What does topsoil provide for plant roots?

• Darkness and moisture

• Best root environment, structure, air, and living organisms

• Only mineral content

• Water retention only

Which weather condition, besides rain, is shown in the image as a cause of soil erosion?

• Hail

• Strong winds

• Lightning

• Fog

Which of the following is NOT a cause of soil erosion?

• Wind

• Water

• Ice

• Plant growth