Unit 3 Weathering and Erosion

Which of the following is a naturally occurring cause of chemical weathering?

• oxygen
• nitrogen
• ammonia
• peroxide

Which is probably most responsible for the formation of this canyon?

• Wind
• Water
• Plants
• Animals

How does a glacier change a river valley?

• It creates a v-shaped valley
• A cirque is formed
• A floodplain forms
• It creates a u-shaped valley

Which of these rocks will most likely experience the greatest amount of ice wedging? 

• A 
• B
• C
• D

Which of these belongs with the group?

• gravity
• glacial erosion
• mudflow
• ice

Scientists measured the loss in height of a sand dune over a four-day period. If everything remains the same, what will the height of the sand dune be at the end of the fourth day?

• 16.7 meters
• 17.3 meters
• 18.7 meters
• 19.3 meters

In which type of climate does chemical weathering usually occur most rapidly?

• hot and wet
• cold and wet 
• hot and dry
• cold and dry 

All of the following directly affect soil formation EXCEPT _____.

• the parent rock
• the shape of the land 
• the climate
• glaciers

Which of the following is not a typical cause of mechanical weathering?

• plant roots
• bird nesting
• animal burrowing
• ice wedging

Which of the following is an effect of wind weathering?

• deflation
• inflation
• cirques
• sheet flow