Boundaries
Where tectonic plates move apart.
What is divergent boundaries?
Shaking of the ground caused by the sudden movement of large blocks along a fault.
What is an earthquake?
An opening in Earth's crust through which lava, volcanic ash, and gases escape.
What is a volcano?
Earth's lithosphere is believed to be broken into huge moving slabs of rock driven by motion.
What is a tectonic plate?
Preserved remains or impression of a once living organism.
What is a fossil?
The motion created when heated material continually rises, cools, and sinks.
What is convection currents?
The force exerted when an object presses on, pulls on, or pushes against another object.
What is stress?
A volcano that is built of alternating layers of lava, ash, and rock.
What is a composite volcano?
The hypothesis that proposed that Earth was once joined in a single land mass and gradually moved apart.
What is continental drift?
A type of fossil that shows evidence of past behaviors.
What is a trace fossil?
Where two plates move past each other in opposite direction.
What is a transform?
The point underground where rocks first begin to move.
What is the focus?
A volcanic crater formed from the collapse of a volcano.
What is a caldera?
The huge supercontinent thought to have once existed.
What is Pangea?
A type of fossil that shows an impression of an organism in rock.
What is a mold fossil?
Where one plate is sinking beneath another.
What is subduction?
The point o Earth's surface directly above the focus?
What is the epicenter?
A conical volcano that is formed by the accumulation of volcanic rock and build around a vent.
What is a cone volcano?
The layer of hotter softer rock in the upper mantle.
What is the asthenosphere?
A mold fossil that fills up with minerals.
What is a cast fossil?
Where older crust is destroyed because two plates converge, or push together.
What is convergent boundaries?
A water wave triggered by an earthquake, volcanic eruption, or landslide.
What is a tsunami?
A wide volcano with gentle sloping sides.
What is a shield volcano?
Earth's crust and the very top of the mantle.
What is the lithosphere?
Hardened tree sap that may contain fossils.
What is amber?