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geology II
semester 2 geology
| Question | Answer |
|---|---|
| who proposed plate tectonics | alfred wegner |
| how continents move | convection currents in mantle |
| what kind of movement is the mid atlantic ridge | divergent |
| what is magma | molten rock inside the earth |
| what is lava | molten rock on earth surface |
| where does magma form | anywhere there is convergent or divergent plate boundaries, hot spots, or convergent boundearies |
| what is a tsunami | a series of large waves caused by earthquake in the ocean |
| how do earthqueakes injure people | debree falls on people |
| what is the angle of repose | how steeply the rocks will stack up |
| what is talus | rock falls, result of weathering and mass movements |
| how much land do glaciers cover | 10 percent |
| what two processes do glaciers play a role in | water and rock cycle |
| how long does it take to create a glacier | hundreds or tthousands of years |
| what is a meadering river | river that flows side to side, |
| what is laminar flow | lazy slow water flow |
| what is turbulent flow | fast rough water flow |
| oceans cover how much of earths surface | 75 percent |
| deep focus vs. shallow focus earthquakes | deeper= less energy shallow earthquake = more energy |
| what is a seismograph? | measures the strength of an earthquake |
| three types of volcanoes | cone shield and composite (strato) volcanoes |