Earth's Layers
The thin outer layer of the Earth covered with rocks.
What is the crust?
A scientist who proposed the idea of continental drift.
The amount of force per unit.
What is stress?
Any place where hot ash, rock, or magma come out of the ground.
What is a volcano?
The result of energy released from movement of rock or elastic rebound.
What are earthquakes?
The section of slow-flowing hot liquid below the crust.
What is the mantle?
A single large landmass that existed millennias ago.
What is Pangaea?
Rock layers bending under stress.
What is folding?
Earthquakes occur on plate boundaries and in hot spots.
A place within Earth along a fault at which the first motion of an earthquake occurs.
What is the focus of an earthquake?
The ball of iron and nickel from the mantle to the center of Earth.
What is the core?
The lithosphere are divided into pieces that move in different directions and speed.
What are tectonic plates?
A crack that forms when large rocks break or slide past.
What is a fault?
There are three types.
How many types of volcanoes are there?
The place directly above the focus on Earth's surface.
What is an epicenter?
The outermost rigid layer of the crust and mantle.
What is the lithosphere?
Mid-ocean ridges, sea-floor spreading, and deep ocean trenches.
What discoveries support the idea of continental drift?
Normal, reverse, and strike-slip faults.
What types of faults are there?
Silica.
What substance determines a volcano viscosity?
They can cause tsunamis.
What can earthquakes cause?
The weak or soft magma/mantle that the lithosphere floats on.
What is the asthenosphere?
Convergent, divergent, and transform.
What are the three kinds of boundaries?
Folded mountains, volcanic mountains, and fault-block mountains.
What are the kinds of mountains?
At any boundary.
Where can volcanoes happen?
Transform boundaries.
Which boundary is most prone to earthquakes?