What are rocks? Rocks are made from a combination of minerals
and can be hard or soft depending on how the minerals are arranged.
Rocks can be found here and here and here
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Some examples of erosion
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The Needles, Isle of Wight
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1890
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1910
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1940
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1975
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Present day
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Erosion experiments Experiment 1: Shaking rocks in a bottle In
this experiment we This showed what happened when rocks travel with
a stream. Experiment 2: Acid on limestone In this experiment we
This showed the damage that can be caused by acid rain. Experiment
3: Heating and cooling a rock In this experiment we This showed the
damage that can be done when a rock is heated and cooled, like
during the day and night. Describe what you did here
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Rock fragments When rocks are transported by a river they are
eroded: When rocks are broken off they can form scree slopes Rock
shape up here Rock shape down here Sediment
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Weathering by ice Onion skin weathering
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Erosion and weathering EROSION is when rocks are gradually worn
down. WEATHERING is when rocks are broken up into smaller ones. The
ultimate result of both of these processes is SOIL.
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Examples of erosion ErosionPhysical, chemical or biological?
Rocks bumping into each other while travelling down a stream Tree
roots pushing against the rock Ice getting into cracks and
expanding Acid rain Animals or plants digging into cracks Onion
skin weathering
