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words abou the earth
Question | Answer |
---|---|
crust | the thinnest layer of the earth which we can live on |
mantle | the layer underneath the crust |
inner core | it is made out of iron |
outer core | made out of melted iron |
magma | found in volcano |
molten | melted |
tectonic plate | the plates that are in the crust |
compression | pushing the into each other |
shearing | sliding past each plate |
tension | pulling apart the plates |
tremor | a short word for earthquake |
fault line | is where the tectonic plates meet |
landslide | it makes land slide down the hill |
liquifaction | the earth makes melted minerals |
seismic wave | they are shock waves that release when a earthquake occurs |
s wave | secondary wave |
p wave | primary waves are the fastest wave in the earth |
surface wave | waves that travel on the surface |
epicenter | the point of the earthquake on the surface of the earth |
focus/hypocenter | the point of the earthquake underground |
tsunami | a big wave created by underwater volcanos, earthquake and rarely by a meteorite |
seismograph | a machine to tell how big a earth the earthquake |
Mercalli scale | it records the level of the earthquake |
Richter scale | it uses seismograph to rate the earthquake |
moment magnitude scale | estimates the total energy released by a earthquake |