Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Dynamic Crust
earth science regents review
| Question | Answer |
|---|---|
| Hot spot | an area of volcanic activity |
| How were the Hawaiian Islands formed | pacific plate moved over magma plume, volcanic island forms |
| hot spot features other than volcanoes | geysers, hot mud, pools of boiling water |
| Shield cone features 4 | non explosive, gentle slope, built from repeated lava flow, mafic |
| Cinder cone features 4 | explosive, built from tephra, steep slope, felsic |
| what is tephra | lava blasted in the air that solidifies and falls to the ground |
| Stratovolcano or Composite cone features 3 | explosive and non explosive eruptions, moderate slopes, built from layers of alternating lava and tephra |
| isostasy | when the amount the crust pushes down is equal to the amount the mantle pushes up |
| stress | force that causes preasure |
| strain | change in shape/ volume of rocks due to stress |
| folds | wave structures in rock layers |
| faults | break in the earth |
| folded mountains | highest mountains: form continental converging boundries |
| fault-block mountains | one plate bumps up |
| dome mountain | molten rock pushes other rock up |
| volcanic mountains | molten rock erupts and cools |
| anticline | up curved folds |
| syncline | down curved folds |
| Alfred Wegeners evidence for continental drift (5 things) | 1.continents fit like a puzzle 2. similar fossils 3. climate change over time 4. matching mineral deposits 5. "connected" mountain ranges |
| mapping ocean floor led to this discovery | magnetic reversal + sea floor spreading |
| paleomagnetism | study of ancient magnetic fields |
| How does sea floor spreading explain magnetic patterns? | mirror image across mid ocean ridges |
| older rock is ______ a ocean ridge | further from |
| mid ocean ridges | divergent plate boundary |
| subduction zone | convergent plate boundary |
| travel time | time it takes a p/s wave travel a distance |
| arrival time | time when a wave arrives |
| origin time | time earthquake starts |
| lag time | difference in arrival time between p and s waves |
| tectonic plates "float" on | the mantle |
| convection cells | driving force beneath plate tectonics |
| describe s-waves traveling | they cannot go through liquids, and they move slow (LARGER) |
| describe p- waves traveling | they are refracted and curved away from the outer core and they move fast (SMALLER) |
| shadow zone? | where no waves are received |
| relationship between rock density and wave velocity | + density + velocity |
| earthquake | any motion in the earths crust |
| focus | origin of earthquake and seismic waves (underground) |
| epicenter | place directly above the focus |
| seismographs | instrument used to measure earthquakes |
| seismogram | diagram produced by seismograph |
| P- waves move like | electric current, dominoes, strait path |
| S- waves move like | snake, wip, curved motion |
| Mercalli scale | qualitative ratings for earthquakes |
| richter scale | scientific measure of waves to rate an earthquake |
Created by:
HundoOnES
Popular Earth Science sets