Unit 2 Weathering and Erosion

Wind can affect a landscape in many ways. In the desert, wind can remove sediment near the surface, leaving gravel behind. The gravel becomes packed and smooth. What is the term for what is formed by this process?

• desert gravel

• desert asphalt

• desert concrete

• desert pavement

Canyons, caverns, channels, and valleys all form because of erosion by water. Which landform listed is mainly formed because of erosion by groundwater?

• a broad valley

• a narrow canyon

• human made channel

• underground cavern

In places where there is loose sand and strong wind, the wind can pick up the sand and carry it. When the wind slows, it deposits the sand. Which of the following is formed by this process?

• dunes

• glaciers

• mudflows

• rockfalls

Besides forming sand dunes, wind also changes the soil over large regions of Earth by depositing dust. What kind of landform is produced by deposits of fine, wind-blown sediment?

• creeps

• dunes

• glaciers

• loess

Wind picks up sediment from the ground and carries it aloft. As the wind slows, it deposits the sediment in other places, sometimes forming dunes. Which type of sediment will be dropped first as the wind slows?

• biggest

• lightest

• smallest

• heaviest

Emily used a tray filled with dirt as a model of a stream. Emily poured water into the top of the tray and observed how much erosion happened. Emily then increased the slope of the tray and repeated the experiment. Which claim describes what would happen when the slope of the tray increased?

• the speed of water and amount of erosion would increase

• the speed of water and amount of erosion would decrease

• the speed of water would increase but erosion would decrease

• the speed of water would decrease but erosion would increase

Riley rubs two rocks together. She notices that some of the surface of one of the rocks was worn away to form small particles. What has happened to that rock?

• it eroded

• it dissolved

• it exfoliated

• it weathered

How would you describe the landscape made by alpine glaciers compared to the landscape made by continental glaciers?

• Alpine glaciers are U shape and continental are V shape

• Alpine glaciers cause rugged landscapes while continental cause flat landscapes

• Alpine glaciers form smooth land while continental glaciers cause hills

• Alpine glaciers cause smooth land while continental form uneven land

Marley has a vegetable garden in her yard. During a storm, heavy rain falls. The rain runs over the garden, and some of the soil is washed away. Which term best describes this movement of soil from one place to another?

• deposition

• discharge

• erosion

• weathering

What are the two ways that rocks are broken down into smaller pieces?

• abrasion and erosion

• chemical weathering and dissolving

• physical weathering and precipitation

• chemical weathering and physical weathering