weatheri ng the pieces or particles of rock (large and small)… add here weathering occurs when...
Post on 18-Dec-2015
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Weathering Weathering
The pieces or particles of rock (large and
small)… ADD HERE
Weathering occurs when
rock is exposed to “weather events” (ex: wind, water,
pressure changes), as well as, the actions of organisms.
Chemical Weathering is the… ADD HERE
The red color in this rock represents chemical weathering. The original composition of the rock has changed due to its exposure to rain. The iron
minerals in the rock combined with the oxygen molecules in rain water to create iron oxide (rust).
The iron oxide in the rock can weather easily.
The statue has gone through chemical weathering. Water combines with carbon dioxide in the air to create carbonic acid.
Carbonic acid will dissolve specific minerals, such as those found in limestone
or marble.
Physical (Mechanical) Weathering
Frost Action: : Water will make its way into a crack in the rock… ADD HERE
Frost Action is responsible for damage done to roadways.
Abrasion: A form of… ADD HEREAn agent of erosion such as gravity, running water, wind and/or glaciers
are responsible for abrasion.
Physical Weathering
“How does abrasion work?”
Sometimes the weathering of rocks can be caused by biologic action.
Living organisms can weather rocks both chemically and physically.
Some organisms will release compounds
through… ADD HERE
The roots of plants will
grow… ADD HERE
Biologic Action
Factors that Impact Weathering Exposure The closer a
rock is to Earth’s surface, the faster it will
weather.
The exposed bedrock along the beach will weather quickly due
to:1. Changes in
temperature. 2. Exposure…
Factors that Impact Weathering
Particle Size and Mineral Composition
Smaller sediments have a larger surface area exposed…
ADD HERE
Some minerals in rocks are… ADD HERE
The minerals that make up this vein of granite are more resistant to weathering than the dark parent rock surrounding it.
Factors that Impact Weathering Climate
Specific types of weathering and its intensity are prone to
certain climates.
PHYSICAL WEATHERING: Prone to… ADD HERE
CHEMICAL WEATHERING: Prone to… ADD HERE
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