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Molten earth material found underground
Magma
Molten earth material found above ground
Lava
The shaking of earth's crust caused by the moving of tectonic plates.
The word that describes the strength of an earthquake
Magnitude
These large plates under the Earth’s surface move and cause earthquakes and volcanoes.
Tectonic Plates
When magma reaches the Earth’s surface, it is called this.
lava
The name of the cloud of ash and debris that is very hot and moves quickly down a volcano
Pyroclastic flow
A crack on the Earth’s surface caused by an Earthquake.
Fault
This scale measures earthquake strength and goes from 1 to 10
Richter Scale
Where is the San Andrea Fault line located?
California
At a convergent plate boundary of an oceanic plate and a continental plate, how will the plates "behave," or move?
The oceanic plate will go under the continental plate (subduct, or subduction)
What type of plate boundary are you most likely to find massive earthquakes and volcanoes?
Convergent
How and why do earthquakes happen?
Tectonic plates are moving past each other and get stuck, building up pressure until they slip and an immense amount of energy is released
Seismic waves
This is a group of volcanoes that form a ring around the Pacific Ocean.
Ring of Fire
Explain how a subduction zone would cause a volcano.
The built up pressure from the oceanic crust going into the mantle would lead to a volcano forming on the non-subducting plate.
At a convergent plate boundary of two continental plates, who will the plates "behave," or move?
They will smash together and create mountains.
These waves are the vibrations that travel through the Earth during an earthquake
Seismic Waves
What number on the Richter scale would be considered an epic earthquake?
10
Explain how a hotspot volcano is formed.
weak parts in crust where magma breaks through
Describe Viscous lava
slow cool moving lava
Why do shield volcanoes not produce earthquakes?
Shield volcanoes are made at divergent plate boundaries, where the plates are moving away from each other. New crust is being formed by magma rising to fill the space. It's not plates trying to push together or slide past each other, getting stuck.
What plate boundary has the most intense earthquakes? What plate boundary causes the most earthquakes?
Convergent and transform
What is a seismic wave?
The shaking or vibrations that move through the Earth when an earthquake happens.
Most earthquakes and volcanoes happen near these plate edges.
Plate boundaries