Show:
Constructive
Destructive
Farmland
C and D forces
Prevention
100
An area of new land at the mouth of a river, formed from sediments carried by the river.
What is a river delta
100
The process of moving sediment by wind, moving water, or ice
Erosion
100

__________ are planted to protect the soil when crops are not in season.

Covercrops

100
What comes out of a volcano? What happens when it cools?
Lava Igneous Rock forms
100

What can be built through a body of water to control flooding?

dam

200

This landform is created when two tectonic plates collide and one pushes up through the earth's crust : Convergent Plates

Mountains

200
What is weathering?
The process of breaking down rock by natural means
200

What can be used on a farm in an area where there is a lot of wind around your crops?

Windbreakers

200
How do earthquakes happen?
The earth's plates collide on the fault lines
200

What can be built on the bank of a body of water to prevent flooding?

levee

300
Name 3 types of constructive forces
Fault, Earthquake, Volcano, Deposition, Wind (Sand Dunes)
300

What are 3 examples of weathering?

Acid Rain, Ice expanding (cracking surfaces), tree roots growing and cracking roads, wind, water

300

_____________ farming is done when you want to plant crops on a steep hill or mountain.  It is like stair steps.

Terrace

300
What does a seismograph do?
Measures the earth's vibrations to track and predict earthquakes
300

What is one way to prevent flooding at the beach?

Build a sea wall to catch the waves.

400
This constructive force moves sediment through water until it is deposited to create a new landform
What is deposition?
400

How is a volcano destructive?

 It burns down stuff and destroys the land.

400

Planting and tilling land of a farm in curved rows to prevent erosion is known as...

Contour plowing

400

How did hawaii form?

By underwater volcanoes.  Lava came out and hardened into new land. Over a long time and many layers of new land, Hawaii rose above the surface of the water.

400

What is one way to prevent harbors at the beach from piling up with sand?

Build Jetties

500
How are sand dunes formed
The wind blows the sand and can shape hills or mounds of sand called dunes
500
What are two phenomenon that can be both destructive and constructive depending on the situation?
Earthquakes and volcanoes
500

What did Farmer Bob need to do to his farmland to keep it from eroding away?

countour plowing and cover crops

500
Explain how earthquakes and volcanoes can be both constructive and destructive forces
Accept reasonable answers
500

One thing you can do around your house to prevent flooding.

Clean out storm drains.