Weathering & Erosion Quiz

Mechanical weathering breaks down existing rocks by

• Changing them chemically, but not physically.
• Changing them physically, but not chemically.
• Changing them chemically and physically.
• Incorporating them into new rocks.

Rust that forms on rocks or metal because of extended exposure to oxygen is what example of chemical weathering?

• carbon dioxide (carbonic acid)
• acid rain
• oxidation
• lichens

Which type of climate will have faster chemical weathering?

• Hot and Wet
• Cold and Dry
• Hot and Cold
• Cold and Wet

What is the relationship between surface area and the rate of weathering?

• As surface area increases, the rate of weathering decreases
• As surface area increases, the rate of weathering increases
• As surface area decreases, the rate of weathering increases
• There is no relationship

What does it mean when a rock's surface area increases?

• There are more surfaces available to be weathered on the rock
• There are less surfaces available to be weathered on the rock
• The rock has weathered completely
• Surface area has nothing to do with rocks

This type of weathering occurs when rock is physically broken down into smaller pieces of rock.

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

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

These rocks were made smooth by wind blowing smaller rock particles across their surface.  This is an example of:

• ice wedging
• chemical weathering
• acid rain
• abrasion

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

How might a weathered mountain appear different than an unweathered mountain?

• Weathered mountain would be taller.
• Weathered mountain would be rounder and less jagged.
• Weathered mountain would be more jagged and less rounded.
• Weathered mountain would have no trees.