Weathering Types and Soil Formation

Process in which something is worn down by rubbing one object or surface against another

• exfoliation
• abrasion
• tumbling
• rotation

Carbon dioxide dissolving in water to make weak acid is what example of chemical weathering?

• water
• lichens
• oxidation
• carbonation

The more surface area of a rock is exposed, the more chemical weathering can occur.

• True
• False

Which of the following is NOT one of the three types of soil?

• clay
• sand
• silt
• mud

Which of the following is the most important soil formation factor

• Time
• Climate
• Slope
• Organisms

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

• weathering
• erosion
• soil conservation
• decomposition

The diagrams 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

This type of weathering occurs when rocks weaken then break down due to chemical changes in the composition of the rock.

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

Which of the following is an example of chemical weathering?

• acid rain dissolving limestone
• roots breaking into concrete
• paper being ripped
• water running over rocks

Exposure to rain and oxygen causes the metal minerals in rocks to rust and fall apart.  This is an example of

• mechanical weathering.
• oxidation.
• erosion.
• a sinkhole.