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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 |