Science Wed

The movement of rock particles by wind, water and ice...

• abrasion
• weathering
• erosion
• deposition

Which of the following is an agent of chemical weathering?

• abrasion
• release of pressure
• freezing and thawing
• acid rain

Which of the following is a method used by farmers to prevent the loss of topsoil?

• leave crop roots in the soil
• increase amount of runoff
• plow hills in straight lines
• remove vegetation to increase wind erosion

The type of landform shown is at the mouth of the Mississippi River. What is it called?

• coastal erosion
• a delta
• a loess
• sand dunes

Glaciers dropping rock and sand to form moraines is an example of...

• weathering
• erosion
• deposition

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

Weathering is the breaking down of rock into ___________.

• boulders
• mountains
• sediment
• ice

The picture shows a large rock breaking apart.  Which of these is MOST likely making the rock break apart?

• hot sunlight
• plant roots
• falling leaves
• running water

The definition of weathering is _______________________.

• the carrying away of rock
• the leaching of rock
• the breaking down of rock
• the permeability of rock

The major source of erosion is _________________.

• wind
• ice
• moving water
• snow