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1.Mass wasting
2.There is a river nearby, so soil creep happened because of water
3.Water in soli creep causes soil to expand and become heavier

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1.Biological weathring
2.There is lichen on the rocks
3.It is caused by activities of living organisms

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1.Chemical weathering(Oxidation)
2.Rock turns red when in contact with water
3.Oxygen is dissolved in water, Iron oxides, when water comes in contact, it dissolves the rock.

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1. chemical weathering(oxidation)

2. There is a redish colour on a rock(inside the water)

3. The rock was in the water for a long time. Due to oxygen the rock gets oxidized, becomes weak and easily crumbles. Also casuing redish colour on a rock.

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1. Frost wedging

2. There is a crack on cement

3. It’s frost wedging due to the freezing of water when it rains, casuing expansion of the water and breaking the rock.

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Mechanical weathering
The mechanical weathering is evident from the cracks in the rock.
The cause of this weathering may be due to biological weathering where the roots of the plant have contributed in breaking the rock apart.

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-Example of chemical weathering
- chemical weathering is evident from the rounded shape of the rock.
- the cause of this weathering could be due to dissolution, the rock has been rounded and dissolved by acidic rain.

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1-Frost wedging
2- we can see cracks in between the rock
3- breaking the rock

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1. Oxidation.
2. The rust (reddish brown colored) at the surface tells me that it is oxidation.
3. Oxygen react with the substances in the rocks to form rust, clays, quarts, then weaken the rock. Oxidation usually occurs with hydrolysis.

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1-Lichens
2- due to growth of Lichen on the rock
3- Breaking down the rock in to small sedimen

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Joe and Cate - Mechanical Weathering (Frost Wedging)

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Joe and Cate - Mechanical Weathering (Frost Wedging)

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One can tell as water has gone into the cracks, freezing and thawing many times - which weakens the rock and cdeates cracks. Cool temperatures and percipitation is the main cause for the water to freeze over ans thaw

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1) chemical weathering- dissolution
2) moss like feature, lime green colour,
3) cause: dissolving by acidic water, forming lichens

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1) chemical weathering-oxidation
2) discolouration of the rock-red, rusty colouring
3) Moisture in the environment (water) and oxygen causes oxidation of the rock. (Was near water)

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Hydration - Rain water added to feldspar, forming clay. Looks like sand but muddy.

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1- Oxidation
2- Change in the rock colour to red
3- presence of oxygen, Iron Oxide

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Mechanical Weathering
- we can tell because there has been a physical change in the rock (pavement), it’s been cracked and the rock has no evidence of change in the chemical composition

- The cause could’ve been the rain and the cold weather that followed afterwards. The rain causes water to fill in the cracks of the rocks and they freeze because of the cold weather causing the rock to expand and contract.

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Oxidization - Chemical weathering. The reddish tinge on the side shows us the weathering. Presence of oxygen and water because it was near moisture.

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Dissolution - dissolving by acidic water causing lichens to form. Can tell it’s lichen due to discolouration of the rock.

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1. Dissolution.
2. The presence of lichen tells me that it is dissolution weathering.
3. Dissolution can be caused by acid rain or lichens. Acid rain will tend to breakdown the minerals and change their composition, and lichens slowly dissolve the molecule of the surface of the rocks.

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1) Mechanical Weathering-frost wedging
2) there is a forced crack in the rock
3) precipitation in cold climate causes constant freezing and thawing of water in the cracks of the rock, forcing the rock apart

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Frost wedging - Water inbetween crack causing expansion - due to cold weather. Crack in the middle of a rock, wet in the middle.

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Plant (lychen and moss). It is growing on the cement/rock therefore is it breaking down as it creates minature cracks. This is bioligical weathering because it is an organism.

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1. Frost wedging.
2. There's a small crack in cement.
3. The rain water seep into the rock, repeatedly freeze and thaw, forcing the rock to expand, and form a crack in the rock.

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1. chemical weathering - hydrolysis
2. I can tell because.....
3. The cause of this weathering is.....