The theory that Earth's surface is broken into large rigid pieces that move independently of each other and are in constant motion on Earth's surface.
What is Plate Tectonics
100
The most recent supercontinent.
What is Pangaea.
100
Energy from the sun is known as...
What is solar energy.
100
Earthquakes occur most frequently at this boundary type.
What is transform.
100
This phenomenon is a result of undersea rifts and volcanoes.
What is seafloor-spreading.
200
Earth's plates interact in a variety of ways when they meet at a ___________.
What is a boundary.
200
Alfred Wegener used this as evidence to prove his theory.
What is similar fossils on far apart continents; matching coastlines of far apart continents; and/or tropical plants on now arctic ares.
200
The "fuel", or heat transfer, behind the motion of plates.
What is convection or convection currents.
200
The centermost point of an earthquake, and the point where the earthquake is strongest.
What is the epicenter.
200
The result of a sudden release in energy in Earth's crust that makes seismic waves.
What is an earthquake.
300
Two plates that crash into one another.
What is a convergent boundary.
300
The theory that all of the continents were once connected the one large land mass that then drifted apart and formed the landforms we see today.
What is continental drift.
300
Warm substances ______ and cool substances ______.
What is rise and sink.
300
A series of water waves that occur as the result of a large volume of water being displaced due to an earthquake.
What is a tsunami.
300
An opening, or vent, in Earth's crust that allows hot magma, ash, and gases to escape.
What is a volcano.
400
Plates that move side to side of each other.
What is a transform boundary.
400
This layer of Earth contains the cycle which causes Earth's plates to move.
What is the mantle.
400
Earth gets its energy from these two areas.
What are solar energy and Earth's core.
400
A volcano that is currently erupting, or likely to erupt, and have erupted in the recent past.
What is an active volcano.
400
The two plate boundaries on which volcanoes can form.
What are convergent and divergent.
500
Plates that move away from each other.
What is a divergent boundary.
500
The layer of Earth that contains the plates.
Hint: exists between the crust and the upper mantle.
What is the lithosphere.
500
Warmer material in the mantle rises, and cooler material sinks, due to changes in ________, which cause the material to move closer to the core or the surface of the Earth.
What is density.
500
A volcano that is unlikely to erupt again.
What is an extinct volcano.
500
A volcano that could still erupt but has not done so in a very long time.