DPM 2

A sandbar is created when waves move sand from the coast, and drops it off in the water. What effects will deposition and erosion have on a beach? Select TWO correct answers.

• Deposition will build up the surface of the beach/sandbar

• Deposition will make the beach safer.

• Erosion will reduce the size of the beach.

• Erosion will possibly create a hazardous environment.

A wildfire wipes out a forest. How would the forest be expected to change over time?

• The forest will not recover.

• The forest will start to grow grass and weeds, then shrubs, and finally trees.

• The forest will grow big trees before small shrubs.

• The forest will erode away due to wind and water.

_{What impact can a hurricane have on a beach?}

• decrease deposition on a beach

• increased erosion of the sand

• decreased pollution

• increase biodiversity

Which type of plants would be the first to grow back after a forest fire?

• lichens and mosses

• grass and weeds

• young trees

• mature trees

How do floods affect the ecosystem?

• increase the temperature of the ecosystem

• decrease photosynthesis for tall trees

• decrease pollution

• wash away/erode soil

How might a forest ecosystem be affected by a tornado? (select TWO)

• uproot trees (knock trees down)

• decrease pollution

• destroy habitats

• increase temperature

What is the correct order of succession immediately after a volcano knocked the trees in the forest down?

• Z, X, Y, W

• X, Y, Z, W

• Z, Y, X, W

• W, Y, X, Z

Which of the following is a change due to chemical weathering?

• acids from lichens break down rock into soil

• water freezes and cracks a rock

• animals dig a hole into the ground

• sand makes rocks smoother

Which TWO processes caused the formation?

• weathering

• ice wedging

• erosion

• volcanic activity

What type of change is ice wedging?

• physical change

• chemical change

• both physical and chemical change

• the rock doesn't change