23 terms

5th grade Unit 5 Science - Geology: All Shook Up

STUDY
PLAY
landforms
physical features on the earth's surface
weathering
the process of breaking rocks into silt, sand, clay, and other tiny pieces of sediment
erosion
the process of moving sediment from one place to another
deposition
process of dropping, or depositing, sediment to a new location
mass movement
the downhill movement of rock and soil because of gravity
crust
the outer layer, made of rock, approximately 7 miles deep
mantle
made of rock, then becomes very hot, thick liquid, approximately 1800 miles deep
outer core
made of molten iron, approximately 1300 miles deep
inner core
made of solid iron, extremely hot, approximately 800 miles deep
plate
rigid blocks of the crust and upper mantle
magma
hot, soft rock from the earth's mantle
lava
magma that reaches Earth's surface
volcano
a mountain formed by lava and ash
earthquake
shaking of the ground caused by the sudden release of energy in the Earth's crust
seismograph
an instrument used to measure seismic waves from earthquakes
faults
places where pieces of the crust move
continental drift
the theory of how Earth's continents move over its surface
Pangea
the name given to Earth when joined into one "supercontinent"
fossil
remains or traces of past life found in some rocks
ridge
underwater mountain range formed by plate tectonics
trench
a narrow, elongate, v-shaped depression in the ocean floor; deepest parts of the ocean
glacier
large land-bound bodies of ice; must be moving, or show evidence of having moved in the past
tsunami
a giant wave caused by earthquakes and volcanoes