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8 g rocks and weathering
- 1. 19/09/14 RRoocckkss aanndd WWeeaatthheerriinngg W Richards Worthing High School
- 2. WWhhaatt aarree rroocckkss?? 19/09/14 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
- 3. SSoommee eexxaammpplleess ooff eerrooss1ii9oo/09nn/14……
- 4. 19/09/14 The Needles, Isle of Wight
- 5. 19/09/14
- 6. 19/09/14
- 10. 19/09/14 1975
- 12. EErroossiioonn eexxppeerriimmeennttss…1…9/09/14 Experiment 1: Shaking rocks in a bottle In this experiment we… This showed what happened when rocks travel with a stream. Describe what you did here… 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.
- 13. RRoocckk ffrraaggmmeennttss 19/09/14 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”
- 14. 19/09/14 Weathering by ice “Onion skin” weathering
- 15. EErroossiioonn aanndd wweeaatthheerriinn1g9g/0……9/14 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.
- 16. EExxaammpplleess ooff eerroossiioonn…1…9/09/14 Erosion Physical, 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”