Yea Right
Study of the earth.
Geology
The point at which an earthquake begins.
Hypocenter / Focus
Most abundant element in the earth's crust.
Oxygen
Another name for a weak earthquake.
Tremor
Smaller earthquake or tremor that follows a large earthquake.
Aftershock
Aside from the Ring of Fire, where is the second most common place to find earthquakes and volcanoes?
Mediterranean Sea
Another name for earthquake vibrations.
Seismic Waves
Central feature of a volcano where gas and debris are ejected.
Vent
When rocks on one side of a fault are shoved on top of the rocks on the other side.
Thrust Fault
Fold
Times, detects, and predicts earthquakes.
Seismograph
Love and Rayleigh waves are known as ___ waves.
Surface Waves
This is found at the boundary between stationary rocks and moving rocks.
Fault
These waves consist of a rhythymic side-to-side motion that occurs at right angles.
S waves
Silicon accounts for what percent of the earth's crust?
28%
Ejecta
Earthquakes that result from sudden movements of rock beneath the earth's surface.
Tectonic Earthquakes
Volcano that has gradually sloping sides.
Shield Volcano
The crust and upper layer of the mantle make up the ___.
Lithosphere
Middle layer of the earth.
Mantle
Rocks that bend downward during the folding process form a trough-like structire called a(n) ___.
Syncline
Bowl-shaped craters produced by volcanoes.
Caldera
Another name for the Ring of Fire
Circum-Pacific Belt
When molten rock erupts from a hole in the Earth's crust; these can form on land or in the ocean.
Volcanic Mountains
True