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volcanoes&earthquake
volcanoe and earthquake test
| Question | Answer |
|---|---|
| whats a composite volcanoe? | a volcanoe thats in between the cinder cone volcano and shield volcanoe |
| Whats a hot spot? | place between the mantle and core thats really hot and can form volcanoes |
| Whats a volcanoe? | an opening in the earth that erupts gases,ash and lava |
| whats a vent? | opening of a volcanoe |
| what are secondary waves | seismograph waves with small magnitudes and arent as fast as primary waves |
| Whats a primary wave? | waves that cause particles in rocks to move back and forth and has the largest magnitude and is the fastest siesmic wave |
| Whats the epicenter? | the point directly above the focus |
| What are surface waves? | seismic wave that moves back and forth side to side and is the slowest and goes in a rotating motion..causes most damage |
| Wahts the modified mercalli scale? | measures intensity of an earthquake |
| Whats the richter scale? | scale that measures the magnitude of earthquakes |
| whats the seismograph? | measures the magnitude of earthquakes |
| Whats an earthquake? | vibrations from breaking of rock |
| Whats a fault? | break in earths crust |
| whats the focus? | point where energy of the earthqauke is first realeased |
| Whats a shield volcanoe? | a broad volcano with gentle slopes |
| Whats tephra? | bits of rock and solidified magma dropped from the air |
| Whats a cinder cone volcanoe? | a pointed volcanoe with steep sides that are loosely packed with tephra |
| Whats a crater? | steep depression in volcano |
| What are the 3 types of plates? | Transform,divergent and convergent |
| What happens during an earthquake? | the plates are either grinding on eachother or coming apart or sliding ontop eachother |
| What are the 3 types of faults and what do they do? | reverse-convergent,hanging wall goes upnormal-divergent,hanging wall goes downstrike slip-plates slide back and forth sideways |
| Where do earthquakes occur? | all plate boundaries and fault areas |
| What determines the magnitude of earthquakes? | the seismic waves (s-wave,p-wave or surface wave) |
| whats the difference between the richter scale and the modified mercalli scale? | richter-measures magnitude,more precise,doesnt depend on opinion,has to do with seismic wavesMercalli-general,opinion based,intenisty,description,could vary |
| how do volcanoes form? | when plates move apart magma rises up through the cracks and builds up eveuntually makind a volcanoe..the same type of thing could happen at a subduction zone |
| what are some ways that humans and the environment are affected by volcanos and earthquakes? | they destroy homes,businesses,change landscape,acid rain death and other stuff |
| factors that control eruption | the silica in lava/magma,gases in lava& shape of volcanoes |
| layers of earth | inner core-solid,outer core-liquid,mantle-liquid and solid,crust-solid |
| where do volcanoes occur? | convergent and divergent plates,hotspots(rocks r forced upward to crust where it melts partially |
| What are the three types of volcanoes? | shield,cinder cone and composite |
| How is a shield volcanoe formed? | by layers of magma building up |
| How is a cindercone volcano made? | by tephra which loosely packs on the sides |
| how is a composite volcano made? | from alt. layers of lava and tephra |
Created by:
VaLeRiA!
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