Transcript Erosion
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 is 2 – I know some examples weathering and erosion 1 - I need to review W & E Changes to the Earth’s surface Weathering Erosion • Breaks down rocks into smaller pieces • 2 types • Removes the rock particles • WWGM – FRAPA – LOWCA Weathering Erosion • Mechanical Weathering (FRAPA) – Freezing & Thawing F – Release of pressure R – Animal Actions A – Plant P Growth – Abrasion A • Chemical Weathering (LOWCA) – Living Organisms L – Oxygen O – Water W – Carbon Dioxide C – Acid A Rain – Examples Erosion moves rock particles • Sediment = rock particles • Deposition = when sediment is laid down/deposited from erosion • Deposition Landform Deposition Erosion Weathering Sediment 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 Water Erosion – waves, rivers, streams, waterfalls • wave erosion • glaciers Glaciers Mass Movement Examples - gravity • • • • • Mudslide Landslide Creeps & Slumps Avalanches US Landform Deposition Erosion Weathering Sediment