Unit 7 Test

1. What can you infer from the picture below about the question Tom is trying investigate?

• How does wind erosion change Earth's surface?
• How does water erosion change Earth's surface?
• How does deposition from wind change Earth's surface?
• How does deposition from water change Earth's surface?

2. Ice deposition can cause slow changes to the Earth's surface. Which is an example of deposition by ice?

• Ice breaks apart rocks
• Water carries away pieces of floating ice
• Wind carries away pieces of rock and ice
• Glaciers drop rocks and sediment as they melt

3. Which is an example of deposition from wind?

• volcano
• sand dune
• morraine
• river

4. Rocks bump and scrape as they tumble down a mountain. What will happen to these rocks as they fall?

• The rocks will get larger.
• The rocks will get heavier.
• The rocks will get smaller and smoother.
• The rocks will get sharper.

5. In this canyon, what is the primary cause of this slow change to the Earth's surface?

• erosion from wind
• erosion from water
• deposition from wind
• deposition from water

6. The ice is causing slow changes to the Earth's surface from what?

• erosion
• polishing
• deposition
• weathering

7. The glacier carriers rock and other matter down the mountain. What is this change called?

• deposition from water
• deposition from ice
• erosion from ice
• erosion from water

8. Moving water may leave sediment piles behind. Which is an example caused by deposition?

• Sand dune
• Space in a sink hole
• The smoothing of rocks
• Sand in a river delta

9. Wei develops a model to show how glaciers cause erosion and deposition. Which model would BEST model erosion and deposition?

• Fill a cup with ice and water and shake it up.
• Let a chunk of ice melt all day in the hot sun and then freeze it again.
• Chip a large block of ice into smaller pieces and pile them up.
• Move a large block of ice slowly across a tray filled with dirt and rocks.

10. Jack collected four observations as evidence of how Earth’s surface changes over time because of weathering and erosion. Which of these natural processes are caused by ice?

• Rain washes soil down a hill
• Sand dunes move in a desert
• Dust storms carry small bits of soil
• Frost wedging splits a rock into two pieces