Layers of Earth
What is the thinnest layer of the earth?
Crust
What direction do divergent boundaries move?
Away from each other
Raditiation
What type of boundaries cause earth quakes?
What state of matter is the inner core?
Solid
What way do convergent boundaries move?
Towards each other
What is conduction?
Transfer of heat by touching.
Results from convection flow- fluid moves in a continuous circulat pattern as it is heated and cooled
Convection Current
Who came up with the theory of Pangea
Alfred Wegner
Name the four layers of the earth
Inner core, outer core, mantle, crust
What way do transform boundaries move?
Side-slip, by each other
What is convection?
Heat transfer by movement of fluids.
The upper most portion of a techtonic plate.
Who came up with the theory of sea floor spreading?
Harry Hess
What was the first piece of evidence that the earths core is solid?
Seismic Waves
How many major tectonic plates are there?
12
What is an example of conduction
many answers- but items must be touching
Slow movement of the continents across the earths surface over time
continental drift
Give one piece of evidence that there is sea-floor spreading?
Molten material, magnetic stripes, drilling samples
What is the zone that s-waves cannot travel through called?
Shadow Zone
3
The sun warming the earth is what type of heat transfer?
Rigid outer part of the earth. Includes the crust and upper part of the mantle.
Lithosphere
What is evidence that Pangea used to exsist?
Fossils, mountain ranges, temperature/climate, animal types