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Transcript
External Forces Affecting Earth
• EARTH IS ALSO AFFECTED AND
SHAPED BY EXTERNAL FORCES,
THEY ARE WEATHERING,
EROSION, AND DEPOSITION
Weathering
 The breakdown of Earth’s crust into smaller pieces
 Smallest particles are called sediment
Erosion
 The process by which weathered rock, sand, and soil
are carried away and moved to a new location
Agents
 3 main natural agents aid the process of
weathering and erosion. They are:
 Water
 Ocean
waves, rivers, streams, and runoff
 Ice
 Frost
wedging, glacier formation & movement
 Wind
 Transports
rock material against gravity
Deposition
 The depositing of particles and sediment in a new location,
resulting in the creation or growth of a landmass
Weathering
Erosion
Deposition