Volcanoes tend to erupt at places where:
A. two plates collide.
B. two plates rub past each other
C. One plate moves under another
D. One plate moves away from another
What is "one plate moves under another"?
100
Scientists could do this to protect a sand dune from erosion.
What is "plant grass"?
100
Walls built to hold water back are called.
What is levees?
100
This is an important factor in chemical weathering of rocks.
A. Water
B. Wind
C. Acid Rain
D. Ice
What is acid rain?
100
A large mass of flowing ice, called a ______________ can erode the rock and soil beneath it.
What is glacier?
200
A stationary pool of magma that forms below Earth's curst i called a(n) ____________ ____________.
What is hot spot?
200
All of these are causes of erosion, except:
A. Gravity
B. Wind
C. Running Water
D. Heat
What is heat?
200
The area next to rivers where flood waters go when the banks can no longer contain the water.
What is flood plain?
200
Sandblasting, temperature changes, and ice expanding in cracks is all types of ____________ _____________.
What is physical weathering?
200
The process by which eroded materials are picked up and left in a different place.
What is deposition?
300
What is lava called before it erupts out of a volcano.