plate tectonics
heat transfer
contintal drift
sea floor spreading
100

What happens when the Oceanic crust and Continental crust come together?

The dense ocean floor crust pushes down into the mantle re-melting the crust. Which causes volcanic mountains and deep trenches.

100

What is radiation?

The transfer of energy through space without touching of the objects.

100

How old is the earth?

300 million years old

100

What are mid ocean ridges?

The longest chains of underwater mountains.

200

What happens when oceanic crust vs oceanic crust come together

Deep trenches; island arc of volcanos by older denser crust is being pushed down under the younger. Which is also called subduction.

200

What is conduction?

Conduction is the heat transfer within materials that are touching.

200

What did Alfred Weagners idea become known as?

continental drift

200

What did scients use to map the mid ocean ridges?

Sonar

300

What happens when its contintal vs continental?

There is no plate subduction,and it causes the crust to crumble up and form mountains.

300

What is convection?

The way heat can be transferred by the movement of liquid fluids or gasses.

300

When did pangea begin to break apart?

Over tens of millions of years ago.

300

What claim did Harry Hess not make

That the earth was getting bigger.

400

How do hot spots work?

When theres weak spots around the crust magma will just flow into the surface.

400

Is sunlight radiation convection or conduction?

Radiation

400

What continents line up?

Africa and south America

400

What goes on in the sea floor spreading process?

Its when new material continually gets added to the sea floor.

500

How many convergent boundries are there.

three

500

When the mantle near the core heats up does it become less dense?

Yes

500

Why was is hypothesis rejected?

He did not provide an acceptable explanation for the force that pushes and pulls the continents.

500

Where does sea floor spreading begin?

It begins a the mid ocean ridges.

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