Understanding Weathering and Erosion

What is the process called when rocks break into smaller pieces?

• Erosion

• Deposition

• Weathering

• Condensation

What moves the small pieces of rock from one place to another?

• Sunlight

• Weathering

• Erosion

• Plant growth

Which type of weathering involves changes due to chemical reactions?

• Physical

• Mechanical

• Biological

• Chemical

What causes mechanical weathering?

• Chemicals

• Water freezing in rocks

• Plants

• Animals

Which type of weathering is caused by living organisms?

• Chemical

• Mechanical

• Thermal

• Biological

What is the main agent of erosion in rivers?

• Water

• Wind

• Ice

• Gravity

What is the term for when sediment settles and adds to land?

• Deposition

• Weathering

• Expansion

• Erosion

True or False: Erosion only happens over millions of years.

• False

• True

What is the difference between weathering and erosion?

• Weathering breaks rocks, erosion moves them

• Weathering moves rocks, erosion breaks them

• Both involve breaking rocks

• Both involve moving rocks

How does the activity of worms affect the soil?

• They erode the soil

• They create air pockets

• They move soil particles

• They compact the soil