What is the earth's shape, slightly wider at the equator due to rotation
100
continental drift
What is the theory that the earth's continents have drifted apart through time
100
ring of fire
What is a region surrounding the Pacific Ocean where the majority of the earth's earthquakes and volcanoes occur
100
volcano
What is any structure which moves magma to the earth's surface
100
substances that are solid, inorganic, and occur naturally
What is minerals
200
mantle
What is the transitional, semi-liquid layer underlying the crust
200
seafloor spreading
What is the diverging of oceanic crust and forming of new seafloor
200
tsunami
What is a massive wave created from an earthquake on the ocean floor.
200
pyroclastic material
What is felsic lava that is ejected in solid fragments of rock
200
easy to observe, but not very reliable to identify a mineral
What is color
300
solstice
What is the two dates per year which direct sunlight strikes highest in the northern and southern hemispheres
300
oceanic crust
What is thin, dense crust found on the ocean floor
300
elastic rebound theory
What is the straightening of plates after plates under stress snap, the cause of the majority of seismic waves
300
lapilli
What is BB or marble sized particles of rock
300
rocks formed from the cooling and crystalizing of magma
What is igneous rock
400
equinox
What is the two dates per year where direct sunlight strikes the equator
400
continental crust
What is thick, light crust found on land
400
fault zones
What is regions where plates under stress move apart
400
composite volcanoes
What is large volcanoes that produce felsic lava
400
measures the softness and hardness of minerals, goes from 1-10
What is Mohs Hardness Scale
500
revolution
What is the orbit of the earth around the sun (365 days)
500
convection current
What is the movement of heat through the asthenosphere which causes plates above to move
500
mercalli intensity
What is the amount of damage caused by an earthquake.
500
caldera
What is a feature produced when an emptied magma chamber causes a volcano to collapse.
500
rock cycle
What is magma, crystallization, igneous rock, weathering and erosion, sediment, cementation and compaction, sedimentary rock, heat and pressure, metamorphic rock, melt, magma