Types of Stress
Kinds of Faults
Measuring Earthquakes
Volcanic Activity
Volcanic Landforms
100
Volcanoes and earthquakes form along…
plate boundaries
100
A fault that occurs where compression forces squeeze plates together and push and the hanging wall moves UP
Reverse fault
100
These waves carry energy released by earthquakes through Earth's crust.
Seismic waves
100
A(n) ______ volcano is one that is erupting or may erupt in the near future.
active (live)
100
This type of volcano is produced by repeated quiet eruptions. The layers that make up this volcano are all made up of lava.
Shield volcano
200
This type of stress occurs where two land masses are pushed together.
Compression stress
200
A fault caused by shearing forces. Plates slip past each other but neither side moves up or down (there is no hanging wall)
Strike slip fault
200
These waves arrive at Earth's surface first. They compress and contract like an accordion.
P Waves
200
A ________ volcano is like a sleeping bear that will wake up and erupt in the distant future. A(n) ________ volcano is not likely to erupt again.
dormant; extinct (dead)
200
This type of volcano is produced by alternating quiet and explosive eruptions. This produces alternating layers of cinders (explosive eruptions) and lava (quiet eruptions)
Composite eruption
300
This type of stress occurs where two land masses are moving apart causing the land to stretch.
Tension stress
300
A fault that occurs where tension forces stretch plates apart causing the hanging wall moves DOWN
Normal fault
300
These waves arrive at Earth's surface second. They move from side to side and up and down.
S Waves
300
This type of lava is a fast-moving, hot lava that looks like smooth, wavy coils when it cools.
Pahoehoe
300
This type of volcano is produced by repeated explosive eruptions. The layers that make up this volcano are all made up of cinders.
Cinder cone volcanoe
400
This type of stress occurs where two land masses slip past each other.
Shearing
400
This type of fault produces mountains
Reverse fault
400
These waves move more slowly than P waves and S waves but they produce the most damage on the surface.
Surface waves
400
This type of lava is cooler and slower-moving. It hardens into rough chunks.
Aa
400
The Hawaiian Islands are far from a plate boundary; they were formed one by one over millions of years as the Pacific plate drifted over this...
a hot spot
500
This famous fault line created by shearing stress is located in California
San Andreas Fault
500
This type of fault produced the Rio Grande rift valley
Normal fault
500
This instrument records and measures seismic waves
Seismograph
500
______ eruptions produce oozing lava while _______ eruptions produce ash, cinders, and bombs.
Quiet; explosive
500
A _____ _____ forms when groundwater that is heated up by magma rises to the surface and collects in a natural pool.
hot spring
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