Weathering and Rocks

Which is an agent of Mechanical weathering?

• carbon dioxide
• acid rain
• oxygen
• freezing and thawing

Which process involves the removal of rock particles by wind, water, ice or gravity?

• oxidation
• chemical weathering
• erosion
• mechanical weathering

Which is an agent of chemical weathering that produces weak acids that dissolve rock?

• burrowing animals
• plant roots
• ice
• pressure

In which type of climate does chemical weathering occur fastest?

• hot and wet
• hot and dry
• cold and wet
• cold and dry

During ____________, iron combines with oxygen in the presence of water to form rust. 

• rock
• pressure
• oxidation
• mechanical

The natural chemical or physical processes that breaks down rock on Earth's surface.

• weathering
• erosion
• deposition
• jackhammering

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

This rock may chemically weather easily because is has many spaces or holes in it that allow water to seep through it, meaning it is:

• permeable
• abrasive
• erosion
• unchangable

These gravestones have slowly broken down and turned a blackish color due to the action of:

• ice wedging
• abrasion
• acid rain
• mechanical weathering

Chemical weathering involves

• changes in density
• changes in volume
• changes in mass
• changes in the composition of the rock