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bbms heinz weatherin
bbms heinz weathering, erosion and deposition
Question | Answer |
---|---|
what is weathering? | breaking rocks |
what is erosion? | moving rocks and sediment |
what is deposition? | put sediment in a new place |
explain chemical weathering. | when chemicals break rocks |
give an example of chemical weathering. | carbonic acid, acid rain, rust, oxidation |
explain physical (mechanical) weathering. | when motions break rocks |
give an example of physical (mechanical) weathering. | abrasion, plucking, ice wedging |
what is abrasion? | rubbing and grinding |
what is plucking? | when glacier pick up and break rocks |
what is ice wedging? | when water gets in cracks, freezes, gets bigger and cracks rock |
what are the four agents of erosion? | water, wind, glaciers, gravity |
what causes mass movement? | gravity |
give four examples of mass movement | landslide, mudflow, slump, creep |
what happens when the agents of erosion deposit sediment? | landforms are created |
what landforms are created by water? | beach, spit, stalactite, stalagmite, delta, alluvial fan |
what landforms are created by glacier? | till, kettle, moraine |
what landforms are created by wind? | sand dune, loess deposit |
how do rocks become rounded? | the edges are broken off by the agents of erosion |
which agent of erosion is most likely responsible for making rocks round? | water |
what is runoff? | the water from rain and snow melt that runs off the land into rivers and streams |
what is in runoff? | sediment |
which agent of erosion can cause fence posts to tilt? | gravity creep |
gravity is a force that does what? | pulls stuff down |
what type of rock is made from cooled lava or cooled magma? | igneous |
what type of rock is made from bits and pieces of other rocks? | sedimentary |
what type of rocks are made from rocks that are changed by heat and pressure? | metamorphic |
what is compaction? | squeezing |
what is cementation? | gluing |
what rock type is formed from weathering, erosion, deposition, compaction and cementation? | sedimentary |