Weathering and Erosion

Earth's surface features are continually changing... this is due to

• wearing away of the surface
• building up of the surface
• Both wearing away and building up

Erosion caused by _______________ changes beaches and lakes

• glaciers
• ice
• waves

What caused this rock to break apart?

• ice
• plant
• wind
• rain

What caused this canyon to form over many years?

• Water
• Deposition
• valley
• Plants

Rain washing away soil from a hillside

• Weathering
• Erosion

Wind blowing sand from one location to another

• Weathering
• Erosion
• Deposition

A mass of ice that covers a large area and moves slowly

• gravity
• glacier
• sediment

These rocks were broken apart from the continuous freeze/thaw of water in the cracks of the rocks. This is an example of:

• ice wedging
• acid rain
• permeability
• abrasion

What is deposition?

• The process by which
  water, ice, wind or gravity
  moves fragments of rock
  and soil.
• The process by which
  water, ice, wind or gravity
  deposit rock sediments
  and soil in a new place.
• The breaking down of
  Earth’s crust into smaller
  and smaller pieces.

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