Dynamic Planet & Geologic History

Front

Primary wave

Back

Fastest seismic wave, can go through solids & liquids

Front

Secondary wave

Back

Slower seismic wave, can only go through solids

Front

Epicenter

Back

Point on the Earth's surface directly above an earthquake focus

Front

Convergent

Back

Tectonic plates moving towards each other

Front

Divergent

Back

Tectonic plates moving apart, or away from each other

Front

Transform

Back

Tectonic plates sliding past each other

Front

Hot spot

Back

Volcanic holes in the middle of a tectonic plate

Front

Continental drift

Back

Theory that all continents were once together in a single landmass

Front

Plate tectonics

Back

Theory that tectonic plates move over the plastic asthenosphere

Front

Asthenosphere

Back

Plastic mantle where convection currents are located