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Earth Science

Study Guide Activities

QuestionAnswer
Why do we have dams on rivers? Dams are used for flood control because they control the flow of water.
What are some methods of flood control? levees, dams, and storm drains.
Where do most earthquakes occur? along plate boundaries.
Earth's surface is divided into sections called ____? techtonic plates
What materials cause mechanical weathering? wind, water, ice (Sometimes animals cause weathering also.)
What are two landforms created by constructive forces? mountains and 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? They can be moved (erosion) by the wind or 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
When rock is worn down in the ocean, such as with a sea arch, what MOST LIKELY occurred to cause the wearing? weathering from moving water
What is the difference between lava and magma. Lava is outside of the Earth's surface; magma is below 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? deltas and sand dunes.
How do cities control flooding? by constructing storm drains in areas prone to flooding
What are two types of weathering? mechanical and chemical
What is a fault? a crack in Earth's crust
What created the Hawaiian Islands? volcanoes
How was the Grand Canyon formed? weathering from the Colorado River
Where are dams built? across rivers
What is a common cause of chemical weathering? acid rain
Created by: gapeachyteacher
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