Geology

Study of the Earth

Coal

Combustible rock.

Desertification

Rivers turn into deserts.

Landslides

Dislocation of land.

Weathering & Erosion

Smoothes rocks.

Porous Rocks

Can store water

Mountains

Mountains have roots.

Internal Waves

Seas have internal waves.

Earth

Rotating sphere.

Pumice

Least dense stone on Earth.

Photic Zone

Visible light section in oceans.

Tectonics

Mountains move.

Dead Sea

Lowest point on Earth.

Sinkhole

Natural hole in the ground.

Volcano

Tremors precede eruptions.

Aftershocks

Delayed weaker quakes.

Minerals

Minerals have different colors..

Hydrothermal Vents

Hot water from deep underground.

Frost Weathering

Water cracks rocks.

Subduction

Rocks sink underground.

Fault Lines

Cracks and fault lines.

Earthquake

Displacement of land.

Soil Expansion

Causes potholes.

Internal Mountains

400 km below surface.

Asthenosphere

Molten layer.

Pyritized Fossils

Fossilized fool's gold.

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