Show:
Mechanical Weathering
Chemical Weathering
Soil
Agents of Erosion
and Finally...
100
breaking down rocks into smaller pieces
What is mechanical weathering
100

metals rusting

What is oxidation

100

unweathered rock that influences the soil above it

What is bedrock

100
small particles which lie loosely on the weathered rock
What is sediment
100
the primary force that causes erosion
What is gravity
200
rocks rubbing against each other
What is abrasion
200
carbon dioxide dissolving in water
What is carbonic acid
200

occurs when rocks rub against each other

What is abrasion

200
wind, water, and ice dropping sediment and rocks in a new location
What is deposition
200

layers of soil

What are horizons

300
water freezing in a rock during the winter
What is frost wedging
300
contains sulfuric acid, carbonic acid, and other chemicals
What is acid rain
300

contains weathered minerals and some nutrients from the humus

What is subsoil

300

wind blowing picks up loose sediment and carries it away.

What is deflation

300
an area of sediment at the mouth of a river
What is a delta
400
water freezing under a rock and pushing it upwards
What is frost heaving
400
these organisms secrete a mild acid that dissolves rocks
What are lichens
400

forms when unmelted snow gets compacted into ice

What is a glacier

400
deposits of rock and soil that is left over from a melting glacier.
What is morraine
400

amount of each kind of particle in a soil sample

What is texture

500
creates cracks and breaks in rocks which leads to exfoliation
What is pressure release
500
these produce sulfur dioxide which combines with water in the atmosphere
What are fossil fuels
500

fertile soil that has equal parts sand and silt combined with half as much clay

What is loam
500

changes rock into new substances

what is chemical weathering

500

an example of erosion caused by gravity

What is a rockslide