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Earth Science

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QuestionAnswer
What is an earthquake? A sudden movement of the Earth's surface caused by the release of stress accumulated along faults or by volcano activity.
What is a fault? A crack in the rock of the Earth's crust
What is lava? What comes out of a volcano
What are constructive forces? Building up of the Earth's surfaces
What are destructive forces? Breaking down of the Earth's surfaces
What is a seismograph? A device that can record the vibrations in the Earth's crust
What is a levee? Features along the sides of rivers that help contain the flow of water
What is a dam? A structure built across rivers to control the flow of running water
What is a seismologist? A person who studies earthquakes
What is weathering and what are the 2 types? Breaking down of structures: chemical & mechanical.
What causes a river delta to form? When the river is flowing into an ocean, the sediment settles in a process called deposition
What causes erosion? Water, wind, ice
How were the Hawaiian islands formed? Volcanos erupting
What causes sand dunes to form? Depositon
What happens when there is a movement in the Earth's crust? Earthquakes can happen
How do we control floods? Dams & Levees
What are the 3 layers of the Earth? describe each layer. Crust- the outermost, thin, solid layer of the Earth Mantle- the middle, thickest layer of the Earth that is made up of rocks and metal Core- innermost layer of the Earth made up of 2 kinds of metal: nickel and iron
What is an example of chemical weathering? Acid Rain
Created by: gapeachyteacher
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