Tectonics
Volcanoes
Earthquakes
Earth Science ROCKS!
I LOVE EARTH SCIENCE!
100
two plates that collide
What is a convergent plate boundary?
100
a low-lying, gently sloped volcano created by quiet eruptions
What is a shield volcano?
100
the point beneath the earth's surface where an earthquake originates
What is the focus?
100
theory that explains how and why the continents move
What is the theory of plate tectonics?
100
a large circular depression formed when a magma chamber beneath a volcano partially empties
What is a caldera?
200
two plates moving apart from one another
What is a divergent plate boundary?
200
volcano created by explosive eruption - has steep sides
What is a cinder cone?
200
the point on the earth's surface above the focus
What is the epicenter?
200
both a major earthquake zone and volcano zone
What is the Pacific Ring of Fire?
200
a sudden return of deformed rock to its undeformed shape
What is elastic rebound?
300
two tectonic plates slide past each other - causes earthquakes
What is a transform boundary?
300
created by explosive and quiet eruptions
What is a composite volcano?
300
scale that measures the magnitude of an earthquake
What is the Richter scale?
300
another name for a composite volcano
What is a stratovolcano?
300
cycle in which heated material rises and cooler material sinks
What is convection?
400
the process of locating the epicenter an earthquake using three seismograph stations
What is triangulation?
400
one tectonic plate sinking beneath another when they collide
What is a subduction zone?
400
scale that measures the intensity of an earthquake
What is the Mercalli scale?
400
volcanic ash, dust, bombs, blocks, lapilli are examples of...
What is pyroclastic material?
400
outer layer of earth made of the upper part of the mantle and the crust
What is the lithosphere?
500
creation of new crust occurring at divergent plate boundaries; creates a rift zone in the ocean
What is sea floor spreading?
500
molten material that erupts out of a volcano onto the surface
What is lava?
500
seismic waves that travel through both solid and liquid
What is P-waves?
500
seismic waves travel through solids only
What is S-waves?
500
solid layer of plastic material that flows very slowly
What is the asthenosphere?
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