click below
click below
Normal Size Small Size show me how
folds, faults terms
Chapter 7 TechTerms Junior High Science
| Term | Definition |
|---|---|
| anticline | upward fold |
| syncline | downward fold |
| elevation | distance above or below sea level |
| landform | physical feature of the earth's surface |
| crater | funnel-shaped pit at the top of a volcanic cone |
| lava | magma on the earth's surface |
| vent | opening from which lava flows |
| vocalnism | movement of magma on or inside the earth |
| volcano | vent and the pile of volcanic material around the vent |
| cinder cone | volcanic cone made up of rock particles, dust, and ash |
| composite cone | volcanic cone made up of alternating layers of lava and rock particles |
| shield cone | volcanic cone made up of layers of hardened lava |
| earthquake | sudden, strong movement of the earth's crust |
| epicenter | place on the surface of the earth directly above the focus |
| focus | place inside the earth where an earthquake starts |
| seismic | earthquake waves |
| seismograph | instrument that detects and measures earthquakes |
| L-waves | surface waves |
| P-waves | fastest earthquake waves |
| S-waves | second earthquake waves to be recorded at a seismograph station |
| Richter Scale | scale that measure the energy released by an earthquake |
| tsunami | ocean wave caused by an earthquake |
| Ring of Fire | major earthquake and volcano zone that almost forms a circle around the Pacific Ocean |