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Chapter 8 - Weather
Chapter 8 Earth Science - Weathering and Erosion
Question | Answer |
---|---|
weathering | the destructive process that breaks down and changes rocks that are exposed at Earth's surface |
Chemical Weathering | minerals and rocks that are broken down and weakened due to exposure to water and gases in the atmosphere |
physical weathering | the breaking down of rocks into smaller pieces without affecting the mineral composition of the rocks |
frost wedging | the freezing and thus expansion of water in the cracks of rocks which contributes to weathering |
soil | mixture of weathered rock, minerals, and organic matter |
erosion | the moving of weathered material from one location to another |
deposition | the process of laying down sediments |
mass wasting | form of erosion, primarily caused by gravity, where a large mass of rocks or soil moves downhill |
landslides | rapid gravity-caused events which move soil, loose rock, and boulders |
meanders | the curves in a stream |
flood | when the water level in an area rises above its usual heights and overflows its banks |
floodplain | wide flat valley located along some rivers onto which flood water flows |
beach | land form consisting of loose sand and gravel and is located along a shore |
glacier | large mass of moving ice and snow |
Basin and Range | large area of north-south trending mountains and valleys, located primarily in Nevada and Utah |
arroyo | stream-beds which only contain water during heavy rains or flooding periods |