Vocabulary 1
Volcanoes
Plate Tectonics
Earthquakes
Vocabulary 2
100
massive land area
continent
100
What term describes a volcano that is erupting now?
Active
100
What's the name given to the giant super continent believed to have existed 200 million years ago?
Pangaea
100
What term means "crack in the earth's crust?"
Fault
100
hot melted rock that is found inside the earth
magma
200
huge sea wave caused by an earthquake on the ocean floor
tsunami
200
What term describes a volcano that will never erupt again?
Extinct
200
On average, about how far do the plates move in a year?
2 - 4 inches
200
What is the name of the famous fault running through Califiornia?
San Andreas Fault
200
center of the earth, formed of hot iron mixed with other metals
core
300
upper-most layer of the earth
crust
300
What term descibes a volcano that has not erupted in a long time, but will erupt again someday?
dormant
300
On what plate do we live?
North American Plate
300
What term means "the size or power of an earthquake?"
Magnitude
300
rock layer about 1,800 miles thick between the earth's core and the crust
mantle
400
theory that the earth's crust is not an unbroken shell, but consists of plates, or huge slabs of rock, that move
Plate Tectonics
400
What term describes the reason Hawaii has volcanoes even though it is in the middle of a plate?
Hot Spot
400
Part of California and all of Hawaii are on what plate?
Pacific Plate
400
What term means "the location on the earth's surface that lies directly above the earthquake's center"?
Epicenter
400
violent and sudden movement of the earth's crust
earthquake
500
process that breaks surface rocks into boulders, gravel, sand and soil
weathering
500
There are over how many active volcanoes on our planet?
500
500
When two plates carrying continents collide, besides earthquakes, what is created on the earth's surface?
Mountains
500
What is an instrument that measures the strength of an earthquake called?
Seismograph
500
process of wearing away or moving weathered material on the earth's surface
erosion
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