Solid rock that makes up the Moon’s and Earth’s outermost layers.
A large body of rocky materials deposited at the edge of a glacier.
moraine
The downhill end of a glacier where glacial till and other debris are deposited.
terminus
The breaking down of rocks into smaller pieces.
weathering
A bend in layers of rock.
fold
A high landform with a flat top.
plateau
The removing of weathered rock.
erosion
A tall landform that rises to a peak.
mountain
The layer of rock below Earth’s crust.
A vibration caused by an earthquake.
seismic wave
The dropping off of eroded soil and bits of rock.
deposition
The liquid layer below Earth’s mantle.
Layers of the EARTH CRUST 5 to 25 miles thick and up to 1,600 F MANTLE 1,800 miles thick and up to 8,000 F OUTER CORE 1,400 miles thick and up to 11,000 F INNER CORE 800 miles thick and up to 13,000 F
A long narrow crack in Earth’s crust.
fault
An instrument that detects and records earthquakes. It shows seismic waves as curvy lines along a graph.
seismograph
A mountain that builds up around an opening in Earth’s crust.
volcano
A sphere of solid material at the center of the Earth.
A sudden shaking of the rock that makes up Earth’s crust.
earthquake