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volcanoes & earthqua
forces that bulid the land
| Question | Answer |
|---|---|
| smaller earthquakes that follow a major earthquake. | aftershocks |
| an instrument that detects, measures, and records the energy of earthquake vibrations at a given location | seimograph |
| the location on Earth's surface above thefocus of an earthquake. | epicenter |
| an opening on Earth's surface through which magma erupts. | vent |
| a break or crack in the rocks of the lithosphere along which movement takes place | fault |
| a vibration that travels through Earth and is produced by earthquakes an volcanic eruptions | seismic wave |
| the measure of energy released during an earthquake | magnitude |
| the point below the surface of the earth where an earthquake begins | focus |
| a type of volcano made up of many layers of rock. It has broad, gently sloping sides. | A shield volcano |
| a type of volcano that is mainly made of cinders or rocks. It has steep sides and the cinders form a cone. | A cinder cone volcano |
| a type of volcano that is made up of thick lava, that's mixed with ash, cinders, and rocks. | A composite volcano |
| a volcano that is formed where plates move apart and gaps along the plates' edges are formed | A rift volcano |
| these are formed when magma rises and pushes against the rock layers above it, forming a large, dome shaped structure. | Dome mountains |
| This is formed when magma hardens in vertical cracks across horizontal layers. | A dike |
| when magma hardens between horizontal layers of rock what is formed? | a sill |
| What is the difference between P waves and S waves? | P waves are faster than S waves. P waves and S waves can both pass through rock , but only P waves can pass through gases and liquids |
| What is the difference between the Richter scale and the Mercalli scale? | The Richter scale measures the magnitude and the Mercalli scale measures the intensity of an earthquake. |
| a series of huge waves caused by an earthquake or a volcanic eruption beneath the ocean floor | tsunami |
| a fault that occurs at transformation boundries and the plates slide past each other without moving up or down. example- San Andreas fault | A strike Slip |
| A fault that is produced at divergent boundries and the plates pull apart moving the rock downward. Example Sierra Nevada | A normal Fault |
| A fault that is produced at convergent boundries where the plates push together and the rocks move upward. Example- Himalayas | a reverse fault |
Created by:
n8mianjaxmom
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