Show:
Interior
Geology
Heat
Drift
The sea floor
100
What layer of the Earth is made up mostly of granite and basalt?
the crust
100
What is the science of studying the Earth?
geology
100
The transfer of heat through electromagnetic waves?
radiation
100
Accoding to Wegener's theory, what do the convection currents in the mantle do?
move the continents
100
The longest chain of mountains in the world, mostly under water
mid-ocean ridge
200
What is the correct order of the Earth's layers (starting from the surface)?
crust, mantle, outer core and inner core
200
What kind of force builds mountains and landmasses?
a constructive force
200
The transfer of heat by direct contact?
conduction
200
What is the name of the supercontinent that existed millions of years ago?
Pangaea
200
How do scientists map the sea floor?
sonar
300
Describe the inner core
dense, spinning, metal
300
What kind of force slowly wears away mountains and eventually every other surface of the Earth?
a destructive force.
300
The transfer of heat through the movement of fluids?
convection
300
The US and Europe are moving toward or away from each other?
away
300
Molten material rises from the mantle and erupts along the mid-ocean ridge is a process called?
sea-floor spreading
400
Describe the contents of the inner and outer cores.
Inner is a spinning solid metal and the outer is molten metal
400
Earth's magnetic field results from what?
convection currents in the mantle.
400
What happens if you remove the heat source from a convention current?
the convection current will eventually stop
400
The theory of __________ was that all the continents once were joined as a single landmass and have since drifted apart.
continental drift
400
The process where the ocean floor sinks beneath a deep-ocean trench and back into the mantle
subduction
500
What are the two layers of the mantle?
lithosphere and asthenosphere
500
What happens to the pressure and temperature as you move toward the center of the Earth?
they increases
500
What does the convection current cause the Earth to have?
a magnetic field
500
Where is evidence of continental drift found?
Landforms, fossils and climate
500
Where is the oldest oceanic crust?
nearer the deep ocean trenches