Earthquakes and Faults Flashcards
It is the shaking and trembling caused by the sudden release of energy.
Earthquake
It is a force that squeezes rocks together.
Compressional force
It is a break in the Earth’s crust along which significant movement has taken place
Fault Lines
Are the vibrations in the ground and generated by an earthquake, explosion, or similar energetic source.
Seismic Waves
Similar to pulling apart a warm piece of gum. Where two plates are moving apart (force)
Tensional Force
The block above the fault moves down
Normal Fault
The block above the fault moves up
Reverse Fault
Similar to a trash compactor. Squeezes rocks until one folds or breaks
Compressional Force
Pushes rocks in two horizontally opposite sides (force)
Shearing
Friction Holds the rocks together, once this friction is overcome; the ground will move and an earthquake will occur
True
Friction does not hold the rocks together, once this friction is overcome; the ground will move and an earthquake will be prevented. True or false?
False
Another name of Hypocenter
Focus
the point at the surface of the earth directly above the hypocenter
Epicenter
Device that detects and record seismic waves
Seismograph
who developed the Richter scale and when.
Charles F. Richter (1935)
