Changing Earths Surface Weathering Erosion and Deposition Weathering

Changing Earth’s Surface

Weathering Erosion and Deposition Weathering The process that breaks down rock and other substances at Earth’s surface

Weathering Erosion and Deposition Erosion The removal of rock particles by wind, water, ice, or gravity

Weathering Erosion and Deposition Erosion The process by which natural forces move weathered rock and soil from one place to another

Weathering Erosion and Deposition Sediment The material moved by erosion

Weathering Erosion and Deposition Sediment May be pieces of rock, soil, or the remains of plants and animals

Weathering Erosion and Deposition When wind and water finally calm, the rocks and the sediment settle to the bottom

Weathering Erosion and Deposition Changes the shape of the land

Weathering Erosion and Deposition Act together in a cycle that wears down and builds up Earth’s surface

Weathering Erosion and Deposition Gravity The force that moves rock and other material downhill

Weathering Erosion and Deposition Mass Movement Any of several processes that move sediment downhill

Weathering Erosion and Deposition Types of Mass Movement Landslides, Mudflows, Slump, Creep

Types of Mass Movement Landslide Most destructive mass movement Rock and soil slide quickly down a steep slope

Types of Mass Movement Mudflow Rapid downhill movement of water, rock, and soil

Types of Mass Movement Slump A mass of rock and soil suddenly slips down a slope in one large mass

Types of Mass Movement Creep Very slow downhill movement of rock and soil