Continental Drift
Plate Tectonics
Plate Boundaries
Earthquakes and Volcanoes
Natural Disasters
100
The name of the supercontinent that broke apart in the Mesozoic era.
Pangea
100
The top layer of the earth that floats above the mantle
Crust or Lithosphere
100
A boundary where two plates collide and make mountains
Convergent
100
Most volcanoes and earthquakes are located where in the world?
Around the Pacific Ocean
100
What is this?
Radar image of a tornado
200
The theory proposed by Alfred Wegener that the continents have moved over time
Continental Drift
200
The layer below the crust where convection currents cause magma to flow
mantle or asthenosphere
200
When two plates collide and the denser plate sinks, causing volcanoes and mountains.
subduction
200
Most deaths in earthquakes are because of...
building collapses
200
A method of protecting your property from wildfires
Firewise
300
The reason why other scientists rejected Alfred Wegener's ideas
He could not prove how the continents moved
300
Causes the tectonic plates to move
Convection currents in the mantle
300
A mid-ocean ridge or a rift valley is where plates separate. This is a....
divergent boundary
300
A tool used to measure the intensity of earthquakes
seismograph
300
What is this?
FEMA flood map
400
The reason why there are the same fossils found on different continents in the same rock layers.
They were once connected
400
Harry Hess discovered rocks at the mid-ocean ridge are younger or older
younger
400
Where two plates slide past each other like the San Andreas fault in California
Transform boundary
400
The state that has the most earthquakes
California
400
The state that has the most hurricanes
Florida
500
Name three other pieces of evidence Alfred Wegener used to support his theory (not including fossils).
Coal deposits, glacier scratches, rock compositions, mountain ranges, shape of continents, etc.
500
What was the name of Harry Hess' theory?
Seafloor Spreading
500
If oceanic crust and continental crust collided, which plate would subduct and why?
Oceanic crust, it is denser
500
If an earthquake happens underwater it can cause a...
tsunami
500
Where most tornadoes occur in the United States
Texas (and The Southeast and Great Plains)