ECB Science Unit #8 Erosion Weathering Deposition

The dropping of sediments in a new place is called_______.

• Departing

• Deposition

• Erosion

• Weathering

What human activities can increase the rate of weathering?

• Increasing the amount of acid rain

• paving over large portions of land

• Strip mining and agriculture

• All of the other answers

The picture above shows the process of mechanical weathering that can cause cracks in rocks in

Georgia’s northern mountains to widen. What is this process called?

• abrasion

• dissolution

• ice wedging

• oxidation

Creep is the movement of rocks and soil down a slope, slowly, due to _____.

• wind

• water

• ice

• gravity

Lichens, which contain weak acids consist of fungi and algae living together, contribute to ___

weathering.

• mechanical

• chemical weathering

• abrasion

• differential

What is the process by which rocks are broken down?

• compaction

• deposition

• erosion

• weathering

The movement of sediment by wind, water, or gravity is called __________________.

• compaction

• deposition

• erosion

• weathering

In nature, ____ is the action of rocks and sediment grinding against each other and wearing away

exposed surfaces.

• chemical weathering

• differential weather

• oxidation

• abrasion

Which of the following agents of erosion causes the greatest amount of erosion?

• Water

• Wind

• Ice

• Gravity

Water is a major agent of chemical weathering because water

• has a density of about one gram per cubic centimeter.

• has the highest specific heat of all common earth materials.

• cools the surroundings when it evaporates

• dissolves many of the minerals that make up rocks.