Weathering and Erosion Test Review

The canyon shown in the picture was most likely formed by

• a volcano

• high winds

• earthquakes

• running water

When the velocity of a river changes as it enters a quiet body of water, sediment is deposited and forms a

• channel

• slope

• delta

• levee

When Joe saw the Rocky Mountains for the first time, he exclaimed, "These mountains are much younger than ours back East!" Which feature supports his conclusion that the Rockies are relatively young mountains?

• They have rounded tops

• Their sedimentary layers are still exposed

• Weathering has not yet hardened the rock

• They have sharp peaks

Chemical weathering of rocks occurs and helps to form soils. Which of the following is an agent of chemical weathering?

• acid rain

• freezing and thawing

• tree roots growing through rocks

• rocks tumbling in a stream or river

In the jar shown, a sample of soil was mixed with water and then allowed to settle for 24 hours. The jar serves as a model for what process?

• Evaporation of water from a muddy pond

• Formation of soil from parent material

• Deposition of sediment in a lake bed

• Erosion of rock particles by water

The outer structures of some buildings are made of limestone. What effect does acid rain have on these buildings over time?

• dissolves the limestone

• changes the limestone to granite

• changes the acidity of the limestone

• causes a buildup of more limestone

By how much has the length of the delta increased from 1982 to 1996?

• 2 km

• 4 km

• 6 km

• 8 km

All of the processes listed below cause changes in Earth's surface. Which of the following is the slowest to change Earth's surface?

• earthquake activity

• landslide

• volcanic eruption

• weathering

Humus, silt, clay, and sand are all part of

• soil

• fungi

• rocks

• plants

What happens to a plant soon after it dies?

• It becomes hard and forms a rock

• it breaks down and becomes part of the soil

• it turns black and becomes coal

• it becomes soft and forms clay