Earthquakes
Volcanoes
Vocabulary
Potpourri
Locations
100
a vibration of the Earth's crust
What is earthquake
100
a mountain that forms when red-hot molten lava flows through a crack on the earth's surface
What is a volcano
100
large basin at the top of a volcano that formed when the volcano fell in on itself after eruption
What is crater
100
Mercalli and Richter scales
What are the terms scientists use for measuring the energy of earthquakes
100
layer of the earth that includes land and the ocean floor
What is crust
200
Fault
What is a break in the crust along which rock moves
200
melted rock inside the earth's surface
What is magma
200
layer we walk on
What is crust
200
This state has more than 20,000 earthquakes each year
What is California
200
continent sized slabs that make up the crust of the upper mantle
What is plates
300
the point underground where the movement of plates along a fault starts
What is focus
300
melted rock that reaches the earth's surface
What is lava
300
thickest layer of the planet
What is mantle
300
What forms different kinds of volcanoes
What is kinds of eruptions
300
Earth's hottest layer
What is inner core
400
the point on the surface that is above the focus
What is epicenter
400
rocky opening that magma flows through to the surface
What is vent
400
dense ball made mostly of iron and nickel
What is core
400
small volcano made of hardened lava chunks
What is cinder cone volcano
400
runs through the entire state of California and causes over 20,000 earthquakes each year.
What is fault
500
Seismograph
What is the instrument that records earthquake waves
500
underground pool that holds hot magma
What is magma chamber
500
fault that lies across the length of California
What is San Andreas fault
500
large mountains with gentle slopes formed from runny lava
What is shield volcano
500
formed when plates move apart and magma rises to the surface of the crust
What is ocean floor
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