Earth's Layers
The outermost solid layer of the Earth.
What is the Earth's crust?
He proposed the hypothesis of continental drift.
Who is Alfred Wegener?
Process which rocks change shape when under stress.
What is deformation?
Place where gas, ash, or melted rock come out of the ground.
What is a volcano?
Ground movements when blocks of rock move and release energy.
What is an earthquake?
Layer of Earth located between the core and the crust.
What is the mantle?
Continents joined 245 million years ago in a single landmass.
What is Pangaea?
Occurs when rock is under stress.
What is folding?
Melted rock that rises towards Earth's surface.
What is magma?
A place within Earth's surface along a fault whee first motion of an earthquake occurs.
What is a focus?
What is convection?
Process used by scientist to explain age and magnetic patterns of sea floor rocks.
What is sea-floor spreading?
A crack that forms when large blocks of rock break and move past each other.
Magma that has reached Earth's surface.
What is lava?
Process which rock changes shape do to stress.
What is deformation?
It extends from below the mantle to the center of the Earth.
What is the core?
Forms when two plates collide.
What is a convergent boundary?
Stress that stretches and pulls apart.
What is tension?
The opening of a volcano.
What is a vent?
The return of rock to its original shape after elastic deformation.
What is elastic rebound?
The outermost rigid layer of Earth.
What is the lithosphere?
When two plates move away from each other.
What is a divergent boundary?
Stress that squeezes or pushes rock together, forms reverse faults.
What is compression?
The resistance of liquid material to flow.
What is viscosity?
Cracks along crust along which blocks of rocks move.
What is a fault?