Physical Weathering

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

• weathering
• erosion
• deposition
• jackhammering

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

• physical 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/frost 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.

Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:

• physical weathering

• chemical weathering

Potholes forming in the road after a cold winter is an example of:

• physical weathering

• chemical weathering

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

All of the following are causes of physical weathering except...

• plant growth
• wind
• acid rain
• running water

Weathering can change roads, sidewalks, buildings and sculptures over time.

• False
• True