Vocabulary 1
A force that acts on rock to change its shape or volume
What is stress.
The shaking that results from the movement of rock beneath Earth's surface.
What is an earthquake.
The type of stress that pulls on and thins an area of Earth's crust.
What is tension.
Volcanoes form at Divergent boundaries when?
Molten material comes through the cracks.
What is collapsed volcano called?
Stress that stretches rock so that it becomes thinner in the middle
What is tension.
The measurement of an earthquakes strength based on seismic waves and movement along faults.
What is magnitude.
When a plate is compressed, it can create anticlines and synclines that can become these.
What are mountains and valleys.
Volcanoes form at Convergent boundaries when?
What is as crust melts underground it rises.
The part of a volcano where magma collects.
What is a magma chamber.
Stress that squeezes rock until it folds or breaks
What is Compression.
A giant wave usually caused by an earthquake beneath the ocean floor.
What is a tsunami.
How much more energy is released by an earthquake with a magnitude of 8 on the moment magnitude scale than one with 6 magnitude.
What is 64 times more.
These are used to detect changes in the tilt of a volcanoes slope.
What is a tiltmeter.
The part of a volcano that is the channel through which magma flows to the surface.
What is the pipe.
Stress that pushes masses of rock in opposite directions.
What is Shearing.
Vibrations similar to sound waves that travel through Earth carrying energy released by and earthquake.
What are seismic waves.
Name the 3 categories of seismic waves.
What are P waves, S waves, and Surface waves.
People who study volcanoes and predict eruptions.
What are Volcanologists.
The part of a volcano that can form leading away from the pipe.
What are side vents?
A break in Earth's crust along which rocks move.
What is a fault.
A scale in which an earthquake's magnitude is assigned by geologist.
What is the Richter Scale.
Describe how the ocean floor uplift and landslides cause tsunamis?
A Sudden vertical change of the ocean.
Fine particles from a volcanic explosion.
What is ash.
Pebble like magma thrown from an explosions
What are cinders.