Exploring Gravity Erosion Concepts

The podcast discusses gravity erosion, highlighting its role as a primary force behind erosion caused by water, wind, and glaciers. It explains mass movement, including types like creep, slumps, mudslides, and landslides, categorized by movement velocity. Creep is slow and hard to measure, while slumps occur when underlying rock can't support soil weight. Mudslides result from saturated soil, causing significant damage. Landslides involve dry soil and rock, with avalanches being similar but involving snow and ice. The importance of gravity in erosion is emphasized.

What is the primary force behind all types of erosion?

• Gravity

• Water

• Wind

• Glaciers

What is another name for mass movement?

• Soil erosion

• Mass wasting

• Rockfall

• Sediment transport

Tags

NGSS.MS-ESS3-2

Which type of mass movement is the slowest and hardest to measure?

• Slumps

• Mudslides

• Creep

• Landslides

What is a common indicator of creep on a hillside?

• Vertical rock layers

• Dry soil

• Horizontal fence posts

• Straight tree trunks

What causes slumps to occur?

• Strong winds

• Earthquakes

• Broken rock unable to support soil weight

• Heavy rainfall

Tags

NGSS.MS-ESS2-4

What is the main factor that leads to mudslides?

• Strong winds

• Earthquakes

• Dry soil

• Saturated soil with water

Tags

NGSS.MS-ESS2-4

What is the difference between a mudslide and a landslide?

• Mudslides occur in winter, landslides in summer

• Mudslides involve soil, landslides involve rock

• Mudslides are dry, landslides are wet

• Mudslides are faster than landslides

Which type of mass movement involves snow and ice?

• Creep

• Avalanches

• Slumps

• Mudslides

Tags

NGSS.MS-ESS3-2

What is a common consequence of large mudslides?

• Increase in vegetation

• Creation of new rivers

• Clogging of highways

• Formation of new hills

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS3-2

What characteristic is common to all types of gravity erosion?

• Unsorted and unlayered fragments

• Layered soil

• Organized movement

• Sorted sediment