Bobbie goods coloring book 81 pag_240127_163802.pdf
Weathering
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3. Happisburgh, North Norfolk Write down 5 geographical questions you could ask someone about this scene. (5 mins) Why? Where? What? How? Who?
4. Landscape The different landscapes of the earth’s surface are the combined result of internal and external forces. What are the internal forces ? What are the external forces ? w - - t - - - - n - e - - s - - -
5. Landscape The different landscapes of the earth’s surface are the combined result of internal and external forces. Internal forces. The work of Plate Tectonics. This results in the formation of volcanoes and fold mountains, and the occurrence of earthquakes, and continental drift External Forces. Weathering and erosion. These two forces are known are often termed “Earth Sculpture”
9. Weathering. The breaking up of rocks in situ. There are 3 main types of weathering: Mechanical or Physical . This is when exposed rocks get broken up by a physical force. Chemical. Biological. This is when exposed rocks get broken up by something living. 1. 2. 3. This is when exposed rocks break up due to a chemical reaction.
16. Chemical Weathering. This is caused by the action of rain water. Spectacular scenery is created by this type of weathering in areas of limestone. Why? Limestone cliffs Dry valley Limestone Caves Limestone pavement
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18. Weathering-Summary The breaking up of rocks in situ. What is weathering ? What are the 3 main types of weathering ? Mechanical or Physical . Chemical. Biological. Where would you be most likely to find rock-peeling? Where would you be most likely to find freeze-thaw? Where would you be most likely to find chemical weathering ? In areas where temperatures are high during the day and cold at night… hot deserts In areas where temperatures oscillate about freezing point.. high mountain areas. In areas where there is a lot of rain and there are rocks which contain calcium carbonate.
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21. Time to go outside! If you have worked well and have left yourself enough time, it’s time to go outside to put your questions to the test! Lets go and find out if we can see weathering in action!