Alfred Weggener's theory stated that all of the continents were once Pangaea which he called a____________.
What is supercontinent?
100
The point below the surface where an earthquake begins.
What is the focus?
100
This volcano is built by layers of ash and cinders sandwiched between layers of hardened lava. It has gentle sloping sides at the bottom and steep sides at the top.
What is a composite volcano?
100
The theory that the continents were once a supercontinent called Pangaea before seperating.
What is continental drift?
200
The layer of gases that surround Earth.
What is the atmosphere?
200
The boundary where two plates move away from one another.
What is a divergent boundary?
200
Smaller earthquakes that occur after the intial quake.
What are aftershocks?
200
This volcano is built by thick lava that is thrown high into the air and falls as chunks or cinders. The mountain has steep sides.
What is a cinder cone volcano?
200
The largest, deepest magma formation.
What is a batholith?
300
This layer of Earth is made of liquid metals
What is the outer core?
300
At this boundary the plates move toward each other.
What is a convergent boundary?
300
The surface directly above the focus of an earthquake.
What is the epicenter?
300
This volcano is built by thinner, fluid lava that speads over a large area. The mountain has a broad base and gently sloping sides.
What is a shield volcano?
300
The Hawaiian islands were not formed at a plate boundary, but by this.
What is a hot spot?
400
This layer of Earth is solid rock and can be found in the bottom of the crust and the top of upper mantle.
What is the lithosphere?
400
At this boundary the plates move beside each other.
What is a transform boundary?
400
This vibration travels through Earth producing earthquakes or volcanic eruptions.
What is a seismic wave?
400
A volcano formed the the gap along a plates edge.
What is a rift volcano?
400
An earthquake, or a volcanic eruption, beneath the ocean's surface can launch one of these.
What is a tsunami?
500
This layer of Earth is almost melted rock and can be found below the lithosphere, making up the remainder of the mantle.
What is the asthenosphere?
500
At the convergent boundary between the ocean plate and the continental plate, this occurs as the ocean plate moves under the continental plate.
What is subduction?
500
These three faults are usually located along plate boundaries.
What are strike-slip faults, normal faults, and reverse faults?
500
A string of island volcanoes formed by a subduction zone.