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RE Vocab (5,6)
RE Vocab (5, 6)
| Question | Answer |
|---|---|
| seismology | study of earthquakes |
| deformation | change in the shape of rock due to stress |
| seismic waves | wave of energy that travels away from earthquake in all directions |
| seismograph | instruments that record vibrations in the ground |
| seismogram | tracing (on paper) of earthquake motion |
| epicenter | point on Earth's surface directly above the focus |
| focus | point along a fault where the first motion of an earthquake occurs |
| volcano | vent or fissure in the Earth's surface through which magma and gases are expelled |
| magma chamber | body of molten rock that feeds a volcano |
| vent | opening in Earth's surface through which volcanic material passes |
| pyroclastic material | forms when magma is blasted into the air and hardens |
| crater | funnel shaped pit near the top of the central vent of a volcano |
| caldera | a large depression that forms when the magma chamber empties and causes the ground above to sink |
| rift zone | area of deep cracks between two divergent tectonic plates |
| hot spots | volcanically active area far from a tectonic plate boundary |