Layers of the Earth
This layer of the Earth is made of mostly granite and basalt. It is also 5-25 miles thick
Crust
Plates move how many inches in a year
1-4 inches
Volcanoes usually occur at which boundary types?
Divergent or Convergent
Who was the German Scientist that created the theory on continental drift?
Alfred Wegener
Epicenter is located where?
On earths surface right above focus
1,400 miles thick and made of liquid iron
When melted rock rises as it is heated and sinks as it is cooled. What is this movement called?
Convection Currents
Volcanoes can also happen where there are holes in the crust called...
hot spots
What was the name of the supercontinent?
Pangaea
a scale from 1-10 that specifies the severity of ground movement during an earthquake
Richter Scale
1,800 miles thick, moves very slowly
Mantle
these occur when built up energy is released at a fault line or plate boundaries
earthquakes
What islands were made because of a hot spot?
Hawaiian Islands
South America and Africa fit together like a
puzzle
earthquakes are both destructive and ____________
constructive
This layer is 800 miles thick, solid and 7,000 degrees Celsius.
Inner Core
earthquakes go out in what type of waves
p-waves, s-waves and surface waves
seismic waves
List the evidence for movement of plates and plate tectonics
fit of continent, matching rock types, fossils, climate zones changed, earthquakes, volcanoes, mountain ranges, ocean floor age, magnetic directions of rocks
What happens at a divergent boundary? Example of a divergent boundary
What happens at a transform boundary? Example of transform boundary.
divergent spreads apart- mid-ocean ridge and rift valley
transform slides past each other-san andreas fault
motion
focus is located where
below surface where earthquake starts
3 types of plate boundaries
convergent, divergent, transform
convergent boundary what happens there and an example
pushes together mount everest