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science ch. 6
6
Question | Answer |
---|---|
Stress | Something that happens when presser is put on something |
Tension | When press builds up |
Compression | Squeezes the rock |
Shearing | Two rocks sliding pass each other |
Normal fault | Rock at an angle |
Hanging wall | The rock that lies above the fault |
Footwall | The rocks that lie below the hanging wall |
Reverse fault | Rocks that push together |
Strike - slip fault | Plats move past each other |
Anticline | A fold rock that bends upward |
Syncline | A fold rock that bends downward |
Plateau | Large area of flat land. |
Earthquake | When the ground shakes valiantly |
Focus | The area under stress |
Epicenter | Where the quake started |
P wave | The first wave to come |
S wave | The next one to come |
Surface wave | P & s waves come to the surfaces |
Mercalli scale | The way to rate quakes |
Magnitude | How bad the quake was |
Richter scale | The scale that measures quakes |
Seismograph | How seismic wavers are measured |
Moment magnitude scale | A system that estimates how big a quake will be |
Seismogram | Records seismic waves |
Friction | When two things rub each other |
Liquefaction | Ground becomes a liquid |
Aftershock | What happens after a quake |
Tsunami | Water moved by a quake |
Base-isolated building | Things used to make buildings safe in a quake |