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100
An underground holding pool for magma
What is magma chamber
100
a break in the crust along which rocks move
What is fault
100
hot melted rock that is underground
What is magma
100
a vibration in the earths crust
What is earthquake
100
a large basin that can form at the top of volcano
What is crater
200
earth has three layers and they are
What is crust, mantle and core
200
scientist use this tool to measure earthquakes
What is seismograph
200
earths crust and upper mantle are broken into several
What is tectonic plates
200
a mountain that forms from lava
What is volcano
200
volcanoes can be useful to farmer because
What is add minerals to the soil to help crops grow
300
how often do earths plate move
What is a few centimeters per year
300
the point on earth surface that is directly above an earthquakes focus
What is epicenter
300
when a volcano collapse into itself it forms a
What is crater
300
which layer of the earth is the extreme hottest
What is inner core
300
the mountains make of lava layers that alternate with layers of cinders
What is composite volcanoes
400
when plates come together what two things can occur
What is a mountain or volcano can form
400
the fault that has caused the greatest amount of earthquakes in CA
What is San Andreas fault
400
name two scales that scientists use to measure earthquakes
What is Mericalli and Richter scales
400
why don't volcanic mountains look the same
What is not all volcanoes erupt the same type of lava
400
name two ways volcanoes build the land
What is new ocean floor with lava and continental crust forms more soil for land
500
name the rocky tube in a volcano through which magma travels
What is conduit
500
what famous volcano in the USA erupted in 1980 that killed about 60 people
What is Mount St. Helen in Washington
500
which eruption can cause deaths due to a destructive ocean wave...what is this wave known as
What is tsunami
500
name three types of volcanoes
What is shield, cinder cone and composite volcanoes
500
what are the earth's plates
What is slabs of crust and upper mantle
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