Earthquakes
Volcanos
what kind of volcano is this?
Earthquake Waves
Types of stresses
100
An ocean wave caused by an earthquake is called what?
Tsunami.
100
Before lava reaches the surface, the molten material is called?
magma.
100
What is this?
caldera volcano
100
S waves are also known as what?
Secondary
100
What are the three different types of stress that occur in the Earth's crust
Tension, Compression, Shearing
200
What causes earthquakes?
An earthquake is caused by a slip on a fault.
200
A what is a large tube in the ground that connects the magma chamber to the Earth's surface.
Pipe.
200
a broad domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.
shield volcano
200
What kind of waves arrive at the surface first?
P waves.
200
Squeezes rock until it folds or breaks
Compression
300
What is stress that pushes a mass of rock in two opposite directions is called what?
Shearing
300
The huge hole left by the collapse of a volcanic mount is called a
Caldera.
300
What are the level areas on a volcano that has been built up over time because of the lave being dried up?
Lava Plateau
300
Which type of wave travels slower?
P waves or S waves
S waves.
300
Pushes a mass of rock in two opposite directions.
shearing
400
An instrument that detects earth waves is a what?
Seismometer.
400
The volcano's along converging oceanic plate boundaries may form a what?
Island Arc.
400
What is a tall, cone shaped mountains in which layers of lava alternate with layers of ash?
Composite Volcano.
400
Which waves can travel through both liquids and solids?
P waves.
400
Pulls on the crust, stretching rock so it becomes thinner in the middle
Tension.
500
To tell how far an earthquake's epicenter from a seismograph, scientists need to measure the difference between the what?
Arrival of the P waves and S waves.
500
What provides that force that causes magma to erupt to the surface?
Dissolved gases trapped in the magma causing pressure to rise.
500
When lava has a high viscosity, it produces ash which all build up around the vent in a steep, coned shaped hill or small mountain.
Cinder Cone volcano.
500
What is the correct order from first to last, in different types of seismic waves to arrive at a seismograph.
P waves, S waves, Surface Waves.
500
What is ONE kind of land forms created by compression
Mountain ranges, ocean trenches, and volcanic arcs.