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Weathering and Climate 6.5 c, d

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Page 1: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Weathering and Climate6.5 c, d

Page 2: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Weathering

The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and atmospheric conditions is called weathering.

Two types of weathering:Physical weathering Chemical weathering

Weathering is distinguished from erosion in that no transportation of material is involved.

Page 3: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Physical Weathering The break down of material by physical or

mechanical means. Physical weathering does not change the material into a new substance.

Page 4: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Examples of Physical Weathering Freezing water (ICE WEDGING) can break rock

without any change in the minerals that form the rock. This usually produces small particles and sand.

Tree roots Sand blasting (wind)

Page 5: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Page 6: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

This is an example

of how a tree and its

roots can breakdown \

or weather a rock.

Page 7: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

This is an example of how wind (sand blasting) can weather a rock.

Page 8: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

The breakdown of material by chemical reactions that changes the composition of the material is called chemical weathering.

Chemical Weathering

Page 9: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Oxidation = is the interaction between oxygen molecules and all the different substances they may contact, from metal to living tissue. (GOOD AND BAD)

Carbonation = is the term for the conversion of an organic substance into carbon

Examples of Chemical Weathering

Page 10: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

OXIDATION

Page 11: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

In weathering environments, the element that is most susceptible to oxidation is iron (Fe).

Page 12: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Carbonization Some fossils are produced by carbonization First image is carbonized leaf from the Eocene Green River

Formation, Wyoming Second image is from the Cambrian Burgess Shale, Canadian

Rockies

Page 13: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

6.5 d

How large bodies

of water

help moderate our climate.

Page 14: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Page 15: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

Large bodies of water (like the ocean) play a big part in controlling and moderating our climate.

Climates around large bodies of water tend to be milder. In other words, the winters are less cold and the summers are less hot.

WHY?

Page 16: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

WHY?Because water heats up more slowly and

cools down more slowly than land does thus making the winters less cold and the summers less hot.

Page 17: Weathering and Climate 6.5 c, d Weathering The break down of rocks, minerals, and soils at or near the Earth's surface by wind, water, organisms and

What would happen if water heated up quicker and cool down quicker than land?More severe stormsUnsteady climate

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