Destructive Processes
Constructive Processes
Controlling Earth's Processes
Living with Earthquakes and Volcanoes
All
100
What do destructive processes do to the Earth?
break it down. They change the earth's surface and landforms
100
What is the constructive process?
Building up the Earth's surface
100
How do we control floods?
Dames, levees, and storm drains
100
What are scientists that study earthquarkes called?
Seismologists
100
What are groins?
Traps sand that water carries to shore.
200
What is weathering?
Rocks become broken down
200
What is deposition?
when material is dropped by wather, wind, or glaciers.
200
Explain a dam.
A structure built across a river to control the flow. It holds back water and sediments.
200
What do seismologist study?
Earthquakes, specifically the waves that travel through the earth's crust
200
Explain beach nourishment.
When sand is added to an eroded beach to try to rebuild it. It is only temporary
300
What causes weathering?
wind and water
300
How are sand dunes formed?
Blowing wind causes sand to be dropped off in another area.
300
Explain a levee
A raised part along the sides of rivers so it makes it harder for water to overflow.
300
What does a scismograph do?
measures and records seismic waves
300
Explain contour plowing and terracing.
When a farmer plows across the sides of hills instead of down the sides.
400
What is erosion?
When weathered rock gets carried, moved, or washed away.
400
What is a moraine? (hint, it was under glaciers)
a ridge of rock and soil
400
Explain storm drains
Uses drains in the ground to prevent flooding
400
What is a tsunami?
A huge ocean wave cuased by an underwater earthquake.
400
What are faults?
Cracks in the Earth
500
The Colorado River carved out the ____________________________________ form because of erosion.
Grand Canyon
500
Where do earthquakes happen?
near faults.
500
How is erosion controlled?
By groins, seawalls, jetties, and beach nourishment
500
When do seismic waves occur related to volcanoes?
When magma starts to flow
500
Explain the difference between magma and lava
Magma is stuff inside the volcano and lava is the stuff that comes out when it erupts.
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