outer core

The part of the Earth upon which the tectonic plates move is the:

asthenosphere

The ancient continent that contained all the landmasses is called:

Pangea

The type of tectonic plate boundary involving a collision between two tectonic plates is:

Convergent

Mountains locatedon a continental plate are usually assoicated with what type of boundary

Convergent

Magma that reaches the Earth's surface may form _____ mountains.

volcanic

Which layer of the earth is made up of the crust and upper rigid mantle, and is broken up into tectonic plates?

lithosphere

What do scientists think causes the movement of the earth's tectonic plates?

convection currents

Earth's lightest materials make up what part of the Earth's interior?

crust

Is Earth's oceanic crust more or less dense then Earth's continental crust?

more

The layer of the Earth that contains the most dense elements is what layer?

inner core

Scientists believe that the Earth's core is made of mostly what?

iron and nickle

What layer of the Earth is the thickest

mantle

What is the semi-liquid, plastic-like layer of the mantle on which the tectonic plates move?

asthenosphere

What is the solid, dense center of our planet earth?

inner core

What is the layer that surrounds the inner core?

outer core

What layer of the Earth is broken up into the tectonic plates?

lithosphere

What is the process by which hot material from deep within the Earth rises while cooler material near the surface sinks creating a circular motion that is beleived to move the plates?

convection currents

What type of boundary is formed when two tectonic plates SLIDE PAST eachother horizantaly?

transform boundary

What boundary is when two plates move away from eachother?

divergent

Marina Trench is an example of what type of boundary?

convergent

Rift Valleys are formed when to plate boundries do what?

Pull/Move Away

If earth lost all of its internal energy what might happen?

Mountains  and volcanoes will stop forming as well as plates wont move

What landforms are created in subduction zones?

Volcano arcs  and trenches

What do scientists think causes the Earth's magnetic field?

spinning of the inner corse and current in the outer core

There are two ways that the Earth gets its internal energy. What are these?

radio active decay and heat from creation