Weathering

When earth materials break apart, it is called: 

• sedimentation
• deposition
• _weathering
• erosion

Sand is actually pieces of:

• glass
• tiny rocks
• fossil pieces
• salt from the ocean

Which agents  break down earth materials?

• wind only
• earthquakes and gravity
• ice and 007
• wind, water, and ice

What is this landform?

• mountain
• canyon
• coast
• cliff

What is this landform?

• valley
• hills
• river
• lake

How does wind abrasion work?

• Sediment is blown off a surface from wind.
• Wind-blown sediment strikes a surface.
• Wind blows large chunks of rock off a surface.
• Sediment falls off of a surface on its own.

How do roots stop erosion?

• They block the wind from the soil.
• They loosen soil.
• They lift up sediment.
• They hold sediment into place.

When wind blows over the land, it picks up the smallest particles of sediment.

• True
• False

The process by which running water, wind, or ice carry away bits of broken-up rock

• weathering
• sediment
• erosion
• cememtation

What is mechanical weathering?

• Process through which rocks are physically broken into smaller pieces.
• Rocks are broken down through chemical changes.
• Rocks are worn away from acid in plant roots.
• Rocks broken down by machinery.