8 g rocks and weathering
TRANSCRIPT
19/09/14
Rocks and WeatheringRocks and Weathering
W Richards
Worthing High School
19/09/14What are rocks?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…
…and here
19/09/14Erosion experiments…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…
19/09/14Rock fragmentsRock 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”
19/09/14Erosion and weathering…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.