Plate Tectonics
Earthquakes
Volcanoes
Locations
100
Who is given credit for the theory of plate tectonics?
Alfred Wegener
100
What machine is used to record the waves that earthquakes produce?
seismograph machine
100
What are the three types of volcanoes?
composite, cinder cone, and shield
100
What ocean is getting bigger and bigger each year?
The Atlantic (sea floor spreading)
200
What is causing the earth's plates to move?
convection currents of the liquid magma that is part of the Earth's mantle
200
What do we call the location where an earthquake originates from?
the focus
200
What type of volcano has small amounts of gas and very fluid lava?
A shield volcano
200
What mountain range was formed when two continental plates collided?
The Himalayan mountain range
300
What is the term used to describe the formation of mountain ranges due to the folding of the Earth's crust?
orogeny
300
What types of waves are produces by earthquakes?
p and s waves
300
What do we call the particles that come out of a volcano when it errupts?
pyroclastics
300
Explain what is happening at the site of the African rift.
Two continental plates are spreading and the Earth is sinking in that area. The valley it creates continues to get bigger and may fill with water.
400
What is definition of "subduction"?
the sinking of one plate beneath another plate
400
What is the name of the scale used to measure the intensity of earthquakes?
Richter Scale
400
What type of volcano will erode very quickly?
cinder cone....the pyroclastics just pile up around the edges never forming solid foundations
400
What mountain range was formed by a oceanic plate converging with a continental plate?
the Andes Mountains
500
Give evidence of plate tectonics
fossils, continents fit like puzzle pieces, connecting mountain ranges
500
What is the name of the fault in the United States that most earthquakes occur along?
San Andreas Fault in California
500
What is one good thing that volcanoes do for our Earth?
Create fertile soil
500
What is the name of the huge supercontinent that existed millions of years ago?
Pangaea
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