Forces in Earths crust
Earthquakes and seismic
Monitoring Earthquakes
Volcanoes and plate tectonics
Volcanic Eruptions
100
a force that acts on rock to change its shape or volume
What is stress
100
the area beneath earth's surface where rock that is under stress breaks,triggering an earthquake.
What is focus
100
measures changes in elevation
What is gps system
100
when magma reaches the surface it turns into this substance
What is lava
100
molten rock and gas leave the volcano through an opening
What is vent
200
can cause masses of rock to slip
What is shearing
200
a number that geologist assign to an earthquake based on the earthquakes size
What is magnitude
200
measures horizontal movement
What is laser-ranging device
200
a week spot in the crust where molten material,or magma,comes to the surface
What is volcano
200
the magma moves upward througha pocket called
What is pipe
300
slips past each other side ways,with little up or down motion
What is strike-slip faults
300
is a rating of an earthquke's magnitude based on the size of the earthquke's seismic waves
What is richter scale
300
measures horizontal movement
What is creep meter
300
an area where material from deep within the mantle rises and then melts,forming magma
What is hot spot
300
is a bowl-shaped area that may form at the top of a volcano around the central vent
What is crater
400
the block of rock that lies above
What is the hanging wall
400
is the area beneath eart's surface where rock that is under stress breaks,triggering an earth quake
What is focuse
400
the record of an earthquake's seismic waves
What is seismogram
400
the resulting volcanoes creat a string of islands called a ____
What is island arc
400
is an area covered by lava as it pours out of a vent
What is lava flow
500
the rock that lies below
What is the foot wall
500
a rating system that estimates the total energy released by an earthuake
What is moment magnitude scale
500
the force that opposes the motion of the surface as it moves across another surface
What is friction
500
is a molten mixture of rock-forming substance,gases,and water from mantle
What is magma
500
beneath a volcano, magma collects in a pocket called
What is magma chamber
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