Weathering and Erosion 1

The diagram shows a rock with water trapped in the cracks during the day and at night. 

Which statement best explains why this process results in weathering?

• frozen water acts as a solute
• water expands when it freezes
• the mass of water increases when it freezes
• frozen water dissolves most types of rock

Which statement DOES NOT describe how rocks can be weathered?

• water fills cracks inside a rock

• rock pieces are moved from one place to another

• plant roots grow between cracks

• living things, like moss or lichen, breaks down rocks.

Water getting into cracks, freezing, and breaking the rocks or pavement apart

• Weathering
• Erosion
• Deposition

How does wind cause weathering?

• wind can not weather rocks

• wind blows sand to create new landforms

• wind blows sand from one rock surface to another

• wind blows sand against the rock's surface breaking it down

Physical and chemical weathering both

• change rocks into new materials.
• dissolve rocks.
• break rocks into smaller pieces.
• require exposure to air.

Physical and chemical weathering differ because

• only chemical weathering produces new materials.
• only physical weathering creates smaller pieces of rock.
• only physical weathering involves water.
• chemical weathering is faster than physical weathering.

Tree roots cause

• physical weathering.
• chemical weathering.
• both chemical and physical weathering.
• neither chemical or physical weathering.

Rain washing away soil from a hillside

• Weathering
• Erosion
• Deposition

This student is blowing sand from one part of the pan to another demonstrating ________ to the class.

• erosion

• weathering

• how soil is formed

• deposition

What happens to a rock when it weathers?

• It settles out of water that is carrying it.
• It creates a valley.
• It forms a delta.
• It breaks into small pieces.