The Theory of Plate Tectonics
Earth's Interior
Convection and the Mantle
Drifting Continents
Sea-Floor Spreading
100

the crust & lithosphere are broken into seven (7) separate sections. What do we call these sections?

What are Tectonic Plates?

100
What are the layers of earth's interior?
the crust, mantle, outer core, and inner core
100

What are the three types of heat transfer?

radiation, conduction, and convection

100

What is the hypothesis (or theory) that all the continents were once joined together in a single landmass and have since drifted apart?

continental drift theory 

100

What is the name of the stream of mountains (or volcanos) that curve along the sea-floor, extending into all of earth's oceans?

mid-ocean ridge

200

What is a scientific theory?

a well-tested concept that explains a wide range of observations

200

What we call the uppermost part of the mantle? (hint: velcro)

the lithosphere

200
What type of heat is transfered by the movement of currents within a fluid?
convection
200
What do we call any trace of an ancient organism that has been preserved in rock?
a fossil
200
A radical idea proposed by Hess that new material is added to the ocean floor.
What is sea-floor spreading.
300
What is the theory that states that pieces of earth's lithosphere are in slow, constant motion, driven by convection currents in the mantle?
plate tectonics
300

Which layers of Earth are the most dense and least dense?

Most Dense: The Inner Core (due to the solid iron and nickel that makes up this layer)

Least Dense: The Crust 

300
What do heating and cooling of the fluid, changes in the fluid's density, and the force of gravity combine to set these in motion?
convection currents
300
What is the name of the scientist that thought of continental drift?
Who is Alfred Wegener.
300
What is the name of the device that bounces soundwaves off underwater objects?
What is sonar.
400
What does the theory of plate tectonics explain?
the formation, movement, and subduction of earth's plates
400
Why do geologists use seismic waves to study earth's interior?
geologists cannot look inside earth
400

What is the measure of how much mass there is in the volume of a substance? (hint: How much space is taken up) 

density

400
According to Wegener, what is the name of the supercontinent formed from continents drifted together?
Pangea
400

Who proposed (came up with) the idea of sea floor spreading. 

Harry Hess

500
What are the three kinds of plate boundaries? What type of plate movement does each have?
divergent boundary - the place where two plates move apart convergent boundary - the place where two plates come together, or converge transform boundary - a place where two plates slip past each other, moving in opposite directions
500
What do scientists think creates earth's magnetic field?
movements in the liquid outer core
500

Bill Nye showed an example of Pangea drifting apart. Which part of Earth's layer did the corn syrup represent? 

The convection currents that happen in the Mantle. 

500

Why was Wegener's hypothesis rejected?

Wegener could not provide a satisfactory explanation for the force that pushes or pulls the continents. He had NO evidence (or proof).

500

This is a valley where molten material seep up from the earth's mantle due to a divergent boundary movement.

What is a rift valley.

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