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EQ and Tsunamis
| Question | Answer |
|---|---|
| what are 3 locations volcanoes occur | constructive plate, destructive plate, hot spots |
| where do most EQs occur? and why doesn't NC get many of them? | most occur on the rim of Pacific Ocean, and because NC is on the plate boundary |
| what is pyroclastic | fragments of rocks by volcano |
| What is seismology | Earthquakes related to phenomena |
| Do EQs w/ lower/higher mag occur more | major EQ's greater than mag 7happen more once per year Great EQs greater than 8+ occur once a year |
| what are p-waves and characteristics | primary waves, fastest waves travel ahead of others through solids and liquids-squeezed together |
| mount st. Helens | May 18,1980 57 people killed by cataclysmic explosion |
| how do you stay safe during a tsunami | get to higher ground |
| how many EQs happen in normal day around the world | 55 earthquakes a day |
| what are surface waves | waves that move the ground up and down |
| How do EQ waves tell us that the outer core of Earth is liquid | observing seismic waves |
| what are landslides? causes | disturbance in natural slope- caused by geology, morphology, and human activity |
| what is the difference between magnitude and intensity | mag measures size intensity describes deg of shaking |
| what is the shake table and how does it help scientist | device shaking scale slops, models & buildings. test stability of buildings/structures survive seismic EQ waves |
| examples of volcanoes and what happens if they errupt | yellowstone, NW Wyoming, long valley, Eastern Cali , toba Indonesiana, and taupo in NZ. Produces a lot of pyroclastic and form large calderas |
| what is a tsunami and what are 3 things that cause them? | giant waves that are caused by EQs /volcano eruptions under sea |
| what is the Focus of EQ. what is the epicenter | place inside earths crust. point on earths surface(epicenter) |
| what is deformation? what is elastic rebound? How do both cause EQs? | changing in shape. happens to crustal material. rock becomes disorted snaps back into original shape |
| how do you stay safe during a landslide | get out its path |
| what are supervolcanoes and why are they dangerous | produce mag-eight eruption on volcanic explosive(over 1,000 cubic kill)/ bigger explosives=danger |
| what strengths are the EQ? | transform:strong, Convergent: strong, Divergent: weak |
| what are s-waves | secondary waves that come after the p-wave, makes s-shaped waves |
| how to survive EQ | inside: under table,desk, doorframe; outside:away from buildings,gas fuel wires, sinkholes, and wires; car:move car out traffic |
| how do scientist predict eruptions | notice steaming and enlarged areas on hot ground |
| what is aftershock? why is it dangerous? | Small EQ waves after large EQ waves. unpredictable and large mag |
| how to find epicenter of EQ using seismograph | point where 3 circles intersect |
| what are climate effects from volcanoes erupting | global cooling or warming |
Created by:
K4Y
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