9.17 WARM UP

• What is the difference between weathering and erosion?

Announcements:-Test Grades are in – you may check at home to see what your grade is – not right now-Quiz Fri: Identifying rocks/minerals; weathering types, erosion types & relative dating-Science Fair: Due Friday

Test Results• Written Test:

– Range: 50%-100%– Avg: high 80’s– How many missed is on back page (ex: -4)– 35 questions total

• Skills Test:– Range 60-97 %– Avg: low 80’s– Added 1 pt due to confusing question– Score is on last page circled

• Both tests are each worth 100 pts (2 separate test scores)

Learning Goal: Structure of the Earth

4 – I can give examples of places that have the FRAPA LOWCA

3 – I can explain what FRAPA LOWCA is2 – I know some examples weathering and

erosion1 - I need to review W & E

Changes to the Earth’s surface

Weathering

• Breaks down rocks into smaller pieces

• 2 types– FRAPA– LOWCA

Erosion

• Removes the rock particles

• WWGM

Weathering• Mechanical Weathering (FRAPA)

– Freezing & Thawing– Release of pressure– Animal Actions– Plant Growth– Abrasion

• Chemical Weathering (LOWCA)– Living Organisms– Oxygen– Water– Carbon Dioxide– Acid Rain

– Examples

Erosion

FRAPA

LOWCA

Erosion moves rock particles• Sediment = rock particles• Deposition = when sediment is laid

down/deposited from erosion• Deposition

Landform

Weathering

SedimentErosion

Deposition

Erosion moves rock particles• Sediment = rock particles• Deposition = when sediment is laid

down/deposited from erosion• Examples: WWGM – “What would G-ma make?”– Wind – Water (runoff, rivers, waves)– Glaciers– Mass Movement • (landslides, mudflows, slumps and creeps)

Wind Erosion – wind carrying sediment

• wave erosion

Water Erosion – waves, rivers, streams, waterfalls

Glaciers• glaciers

Mass Movement Examples - gravity

• Mudslide• Landslide• Creeps & Slumps• Avalanches• US

Landform

Weathering

SedimentErosion

Deposition