Show:
Volcano Basics
Earthquake!!!
Do the WAVE
Seismic Stumpers
Vocab Anyone?
100
This type of volcano has a broad, flat cone shape with gently sloping sides.
What is a shield volcano.
100
Most earthquakes happen at the edges of _________.
What are tectonic plates?
100
The three major seismic waves.
What is Primary, Secondary, and Surface
100
Waves of energy that travel through the middle of the Earth
What are body waves.
100
These are large, rising bodies of magma NOT found at plate boundaries.
What are hotspots.
200
This type of volcano is composed of alternating layers of lava and rock particles.
What is a composite or stratovolcano.
200
Scientists who study earthquakes and seismic waves.
What is a seismologist.
200
This is the fastest moving seismic wave.
What is primary wave.
200
This kind of motion occurs when two plates slip past each other.
What is transform motion
200
Molten rock is called this once it reaches the Earth's surface.
What is lava.
300
A dense cloud of super-hot gases and rock fragments that races downhill.
What is a pyroclastic flow.
300
The point beneath the Earth's surface where the earthquake begins.
What is the focus.
300
This type of wave does not travel through a liquid.
What is secondary wave.
300
Seismologists use this scale to measure earthquake strength
What is Richter Scale or Richter Magnitude Scale.
300
When the roof of a magma chamber collapses, a(n) _______ results.
What is a caldera.
400
Pebble-like bits of magma that cool in the air
What are lapilli?
400
Measure of the strength of an earthquake.
What is magnitude.
400
This is the instrument scientists use to record seismic waves.
What is seismograph.
400
The simplest method used to find an earthquake's epicenter
What is the S-P time method?
400
This is the most dangerous type of volcanic eruption.
What is an explosive eruption.
500
This is a mineral found in magma and it is what the explosiveness of a volcanic eruption mostly depends on.
What is silica content.
500
The theory that active faults with few earthquakes in the past will have strong ones in the future is called ___.
What is gap hypothesis.
500
The most destructive seismic waves are _____.
What are surface waves.
500
How much more ground motion does an earthquake with a magnitude of 7.0 have than one with a magnitude of 4.0.
What is 1000.
500
A set of deep cracks between plates is called __________.
What is a rift zone.