1. 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

2. 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)

3. 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 is 2 – I know some examples weathering and erosion 1 - I need to review W & E

4. Changes to the Earth’s surface Weathering Breaks down rocks into smaller pieces 2 types – FRAPA – LOWCA Erosion Removes the rock particles WWGM

5. 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 Examples Erosion F R A P A L O W C A

8. Erosion  moves rock particles Sediment = rock particles Deposition = when sediment is laid down/deposited from erosion Deposition LandformWeatheringSedimentErosionDeposition

9. 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)

10. Wind Erosion – wind carrying sediment

11. wave erosion Water Erosion – waves, rivers, streams, waterfalls

12. Glaciers glaciers

13. Mass Movement Examples - gravity Mudslide Landslide Creeps & Slumps Avalanches US

14. Landform Weathering SedimentErosionDeposition