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Earth Science

Study Guide

Why do we have dams on rivers? They control the flow of the river and they are used for flood control.
What are some methods of flood control? Levees, dams, and storm drains.
Where do most earthquakes occur? At plate boundaries.
Scientists believe that the earth's surface is divided into sections called...? Techtonic plates
What materials cause weathering? Wind, water, ice (Sometimes animals cause weathering also.)
What landforms are a result of constructive forces? Mountains, volcanoes
The MOST COMMON cause of earthquakes is: Movement of the Earth's crust
Water and wind can break rock into small pieces. What happens to these small pieces when they break away? It can be moved by the wind or the water.
What causes rocks in a stream to be smooth? Weathering
When a continental plate (thicker) pushes against and oceanic plate (thinner), what happens? The continental plate moves over the oceanic plate.
Which device do scientists use to record the strength of an earthquake? Seismograph
If a big rock is being worn down in the ocean, such as with a sea arch, what MOST LIKELY occurred to cause the wearing? Weathering by waves
Explain the difference between lava and magma. Lava is outside of the Earth's surface where as magma is inside of the Earth's surface.
What is the term used to describe "the movement of sediments from one place to another"? Erosion
What are two common effects of deposition? The creation of deltas and sand dunes.
What do cities use to control flooding in areas that are prone to flooding? Storm drains
What are two types of weathering? Mechanical and Chemical
What is a fault? A crack in Earth's crust.
How were the Hawaiian Islands formed? Volcanoes
How was the Grand Canyon formed? Weathering from the Colorado River
Created by: gapeachyteacher