Weathering, Erosion, and Deposition

What environment of deposition is shown in the picture?

• Beach

• Marsh

• Delta

What landform is this and what agent of erosion formed it?

• U-shaped valley, formed by glaciers

• Mudslide, formed by gravity

• Dust storm, formed by wind

After a rain shower, water can seep into cracks and fractures in rock. When the water freezes, it will expand causing the cracks to widen. This process continues which eventually breaks the rock to pieces. This process can best be explained by:

• Leaching of minerals from the rock

• Chemical weathering due to carbon dioxide dissolving in rainwater

• Mechanical weathering due to ice wedging

Which of the following statements BEST describes the composition of soil?

• Soil is composed of rocks, minerals, humus, water, and air.

• Soil is composed of humus, dirt, and small rocks.

• Soil is composed of rocks, minerals, and air.

On the inside of a bend of a river, the river slows down where the land is flat and the sediments are dropped. This area drains poorly. Which environment of deposition does this describe?

• Freshwater marsh

• Delta

• Barrier island

Construction on steep slopes in California has lead to severe erosion by _____________, including landslides.

• Wind

• Water

• Gravity

Which of the following gives an example of chemical weathering?

• Ms. Gunter slamming a piece of chalk on the ground and breaking it into smaller pieces.

• Ms. Gunter putting a piece of chalk in vinegar where it causes a reaction and bubbles.

• Ms. Gunter using a hand fan to blow sand off the table and observe which direction it goes.

What is terracing?

• Changing one steep hill into a series of smaller flatter fields to prevent rain erosion.

• Planting trees and shrubs around a field to prevent wind erosion.

• Leaving the remains of some plants in the field to reduce water runoff.

Which of the following describes a barrier island?

• A poorly drained, flooded area found along the coast with grasses and wildlife.

• A fan-shaped river entering the ocean.

• A deposit of sand parallel to the shore, but is separate from the mainland.

The natural arch shown was impacted by erosion. Which agent of erosion is the main cause of this land formation?

• Wind

• Gravity

• Ice