Weathering

Rocks are constantly being worn down by a number of processes known as

____________________ is the most significant form of erosion.

• Wind

• Water

• Waves

• Glaciers

The process that breaks down rock and other substances at Earth's surface is called ______.

• Erosion

• Deposition

• Weathering

• Metamorphism

The definition of weathering is _______________________.

• the carrying away of rock

• the leaching of rock

• the breaking down of rock

• the permeability of rock

Select the three types of Weathering

• Mechanical weathering

• Chemical Weathering

• Physical Weathering

• Biological Weathering

The most common type of mechanical weathering is...

• Rocks breaking apart

• Chemical Weathering

• Freeze Thaw Action

Select the following true statements

• Water freezes at 0 degrees

• Water expands by 50% when frozen

• Shattered and broken pieces of rock is known as Scree

True or False - Chemical weathering is caused by chemical changes, when rock is dissolved or decayed

• True

• False

Which geologic feature is caused primarily by chemical weathering?

• large caves in limestone bedrock

• a pattern of parallel cracks in a granite mountain

• blocks of basalt at the base of a steep slope

• the smooth, polished surface of a rock in a dry, sandy area

Which activity demonstrates chemical weathering?

• freezing of water in the cracks of a sandstone sidewalk

• abrasion of a streambed by tumbling rocks

• grinding of talc into a powder

• dissolving of limestone by acid rain