Weathering and Erosion

How does freezing water cause the weathering of rocks? The freezing water—

• keeps the rocks in place.

• makes the rocks last longer.

• expands cracks and breaks rocks.

• causes rocks to fall in landslides.

The process that breaks down rocks and other materials on Earth's surface is called

• Weathering

• Erosion

• Deposition

• Decomposition

Over long periods of time, deposition may change the Earth’s surface by _____.

• forming new land features.

• breaking down large rocks into smaller ones.

• washing away beaches.

• moving topsoil.

A cliff formed near the ocean. Which statement best describes how this cliff formed?

• Warm air melted the rock.

• Sun rays evaporated the rock.

• Ocean waves washed away rock.

• Plant roots pushed away the rock.

What is the process that picks up and moves weathered rocks?

• Deposition
• Landslide
• Weathering
• Erosion

What causes the greatest erosion effect on our beaches?

• Waves

• Gravity

• Glaciers

• Wind

What is an enormous mass of ice moving over land, causing weathering of rock and soil?

• A glacier

• An iceberg

• An ice wedge

• A sand dune

How do plants weather rocks?

• During photosynthesis

• When roots grow into cracks of rocks and expand the rock breaks.

• When the plant moves water from the roots to the leaves, the rock breaks.

• Plants don't weather rocks.

Some agents of weathering are water, wind, ice, temperature and plant roots.

• true

• false

What caused the edges of these rocks to become smooth?

• rocks bumping and scraping against each other in a river
• ice scraping from a glacier
• sand blowing in the wind
• plants growing roots