What evidence do scientists have that Earth's interior is layered?
What is rock samples and seismic waves
100
What are the three types of heat transfer?
What is radiation, conduction, and convection
100
What is Pangaea?
What is a single landmass that was thought to be made of all the continents 300 million years ago.
100
What is sea floor spreading?
What is sea floor spreads apart along both sides of a mid-ocean ridge as new crust is added, creating a conveyor belt effect.
100
What is the theory of plate tectonics?
What is pieces of Earth's lithosphere are in slow, constant motion driven by convection currents in the mantle.
200
What are the two primary parts of the mantle? How are they different?
What is the lithosphere and the asthenosphere. The lithosphere is the uppermost layer and are a rigid, stony layer; this is different from the asthenosphere which is a lower layer of the mantle and therefore hotter and less rigid.
200
What is density?
What is a measure of how much mass there is in a volume of a substance.
200
What pieces of evidence did Wegener have for his continental drift theory?
What is fossil evidence, geographical evidence, climate evidence, glacier evidence.
200
What is some evidence of sea floor spreading?
What is rock samples, sonar readings, magnetic stripes
200
What happens at colliding boundaries?
What is two plates come together or collide and can form mountain ranges or leads to subduction.
300
What primary substances are they core made out of?
What is nickel and iron
300
How are radiation and conduction different?
What is in radiation, energy transfer occurs through space, whereas with conduction, there is direct contact with the energy transfer.
300
Why did many people disagree with Wegener's theory?
What is they didn't like that he had no explanation of the force that was causing the drifting.
300
What is subduction?
What is the process by which the ocean floor sinks beneath a deep-ocean trench and back into the mantle.
300
What are faults?
What are breaks in EArth's crust where rocks have slipped past each other.
400
What causes Earth's magnetic field?
What is scientists believe that the movements in the liquid outer core create the magnetic field.
400
What is convection?
What is heat transfer by the movement of currents within a fluid.
400
How did material get created to form this original landmass called Pangaea?
What is sea floor spreading.
400
What are some land features created by sea floor spreading?
What are deep ocean trenches and mid-ocean ridges.
400
Difference between outer and inner core.
What is outer core is liquid and in constant motion. Inner core is solid.
500
What are the basic characteristics the layers of Earth are based on?
What is size, composition, temperature, and pressure
500
How do convection currents connect to the mantle?
What is the heat from the core and mantle causes material to heat up, become less dense and rise, and then cool and fall creating currents in the mantle that causes movement of the crust.
500
What is a fossil?
What is any trace of an ancient organism that has been preserved in rock.
500
Why is sea floor spreading important?
What is adds new material; replaces the sea floor; creates landforms.