Changing Earth’s Surface

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

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

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

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

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

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

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

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

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

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