Plate Tectonics
Earthquakes
Volcanoes
All Topics
100
A theory states that the earth's surface is broken into plates that move
What is a plate tectonic
100
Vibrations produced by the breaking of rock
What is an earthquake
100
An opening in earth that erupts gases, ash, and lava
What is a volcano
100
What is it called when earth's crust and part of the upper mantle are broken into sections
What is plates
200
The plastic like layer that is below the lithosphere
What is asthenosphere
200
The point on the Earth's surface directly above the focus of an earthquake
What is an epicenter
200
A steep walled depression around a volcano's vent
What is a crater
200
How are hot spots formed
Hot rock is forced toward the crust where it melts partially
300
Most of the movement along a strike-slip fault is what to earth's surface
What is parallel
300
An instrument that records earthquake waves
What is a seismograph
300
What produces explosive eruptions
Silica-rich or granaitic magma
300
Name four products of eruption
Lava, ash, gas, and cinders
400
The cycle of heating, rising, cooling, and sinking
What is convection current
400
What type of wave cause rock particles to move at right angles to the direction that the wave is traveling
Secondary waves
400
What do you call bits of rock or solidified lava dropped from the air
What is tephra
400
What is the difference between the two types of seismographs
One type was made to measure horizontal motions, and the other was made to detect vertical seismic motions
500
What are the plates of the lithosphere composed of
What is Oceanic crust, continental crust, and rigid upper mantle
500
How thick is Earth's inner core
1,216 km thick
500
In what period of time did Anak Krakatau form in
The early 1900s
500
Name 4 types of volcanoes
What is volcanic neck, cinder cone volcano, composite volcano, shield volcano
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