science vocab
Terms
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- Tsunami
- A giant sea wave produced byan Earthquake
- Volcano
- A place in the Earth's surface through which molten rockand other materials reach the surface
- Composite Volcano
- A volcano built of alternating layers of rock particles and lava
- Richter Scale
- The scale used to measure the strenght of Earthquakes
- Volcanic Dust
- The smallest rock particles blown into the air during an eruption
- Magma
- Molten rock below the Earth's surface
- Secondary Wave (S Wave)
- A side-to-side earthquake wave, which can travel through solidsbut not through liquids or gasses. S waves are slower than P waves but faster than L waves
- Seismologist
- A scientist who studies Earthquakes
- Volcanic Ash
- Rock particles more than0.25 mm but less than 5 mm across that are blown in to the air during an eruption
- Seismic Wave
- An earthquake wave
- Ring of Fire
- The earthquake and volcano zone that encircles the Pacific Ocean
- Earhtquake
- The shaking and trembling that resultsfrom the sudden movement of a part of the Earth's crust
- Cinder Cone
- A volcano made mostly of cinders and other rock particles that have been blown into the air
- Vent
- An opening through whick lava erupts
- Surface Wave (L Wave)
- A up-and-down earthquake wave;L waves are the slowest moving of all the waves
- Seimograph
- An insturment that decets and measures seismic waves
- Epicenter
- The point on the Earth's surface directly above the focus of an earthquake
- Caldera
- A roughly circular, steep- sided pit at the top of a volcanic cone whose diameter is at least three times its depth
- Prymary Wave (P Wave)
- A push-pull seismic wave whichcan travel through solids, liquids, and gasses. P waves are the fastest type of wave
- Volcanic Bomb
- Rock particles larger than 5mm in diamater blown into the air during an eruption
- Crater
- A funnel shaped pit at the top of a volcanic cone whose diameter is three times less than its depth
- Focus
- The underground point of origin of an Earthquake, where the rocks break and move
- Cinder
- A small, rough volcanic bomb no more than sevral centimeters across
- Seismogram
- A record of seismic waves recorded by a seismograph
- Shield Volcano
- A volcano composed of quiet lava flows
- Lava
- Molten rock at the Earth's surface