Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
DO NOW Weathering and Erosion Hill Science 6 Earth Processes DO NOW • 1. Weathering is…. • 2. Principle of Uniformity • 3. Lithosphere • A. the solid part of the Earth – crust and upper mantle • B. breaking down of the lithosphere by the action of wind, water, ice, plants, animals, and chemical changes. • C. processes that changed the world in the past are still acting on the Earth now. DO NOW • 1. Weathering is…. –B • 2. Principle of Uniformity –C • 3. Lithosphere –A • A. the solid part of the Earth – crust and upper mantle • B. breaking down of the lithosphere by the action of wind, water, ice, plants, animals, and chemical changes. • C. processes that changed the world in the past are still acting on the Earth now. DO NOW • 1. Erosion • 2. Two types of weathering • 3. Mechanical weathering • 4. Chemical weathering • 5. deposition • A. Mechanical and chemical • B. laying weathered material down in a new location • C. carrying away or transporting weathered material • D. breaking down rock into smaller pieces • E. altering the mineral composition (chemical makeup) of the rock DO NOW • 1. Erosion –C • 2. Two types of weathering –A • 3. Mechanical weathering –D • 4. Chemical weathering –E • 5. deposition –B • A. Mechanical and chemical • B. laying weathered material down in a new location • C. carrying away or transporting weathered material • D. breaking down rock into smaller pieces • E. altering the mineral composition (chemical makeup) of the rock DO NOW • • • • • • 1. exfoliation 2. ice wedging 3. root pry 4. abrasion 5. gravity 6. frost heaving • A. the peeling of the outer layers of rock due to pressure or temperature changes • B. growth of roots expanding a crack in a rock • C. rubbing and wearing away material by wind or water • D. landslides • E. water freezing in a crack in a rock expanding and widening the crack • F. water freezing under a paved surface pushing the surface up DO NOW • 1. exfoliation – A • 2. ice wedging – E • 3. root pry – B • 4. abrasion – C • 5. gravity – D • 6. frost heaving – F • A. the peeling of the outer layers of rock due to pressure or temperature changes • B. growth of roots expanding a crack in a rock • C. rubbing and wearing away material by wind or water • D. landslides • E. water freezing in a crack in a rock expanding and widening the crack DO NOW • • • • 1. oxidation 2. carbonation 3. humic acids 4. what affects rate of weathering • A. CO2 combines with rain creating an acid that changes the chemical composition of the rock. • B. oxygen combining with another substance – ex. Rust • C. type and condition of the rock, pollution, climate • D. plants produce acids that break down rock. DO NOW • 1. oxidation –B • 2. carbonation –A • 3. humic acids –D • 4. what affects rate of weathering –C • A. CO2 combines with rain creating an acid that changes the chemical composition of the rock. • B. oxygen combining with another substance – ex. Rust • C. type and condition of the rock, pollution, climate • D. plants produce acids that break down rock. DO NOW • 1. What type of weathering is shown in the photos to the right? Lichens on the rocks DO NOW • 1. What type of weathering is shown in the photos to the right? – Chemical weathering – specifically humic acids DO NOW • 1. Differential weathering • 2. Desert climate • 3. Tropical climate • 4. Size of rock • 5. Elevation • 6. Type of rock • 7. Calcium carbonate • 8. Carbon dioxide • A. rock weathers more slowly due to lack of water • B. smaller pieces of rock weather more quickly than larger – WHY? • C. hardness, chemical composition, and condition of rock affect weathering – WHY? • D. CO2 • E. softer rock wears away more quickly leaving harder rock behind • F. rock wears more quickly due to ample moisture • G. rock wears more quickly on mountain top because subject to more wind, rain, and ice – WHY? • H. CaCO3 DO NOW • 1. Differential weathering - E • 2. Desert climate- A • 3. Tropical climate - F • 4. Size of rock- B • 5. Elevation - G • 6. Type of rock- C • 7. Calcium carbonate - H • 8. Carbon dioxide-D • A. rock weathers more slowly die to lack of water • B. smaller pieces of rock weather more quickly than larger – WHY? • C. hardness, chemical composition, and condition of rock affect weathering – WHY? • D. CO2 • E. softer rock wears away more quickly leaving harder rock behind • F. rock wears more quickly due to ample moisture • G. rock wears more quickly on mountain top because subject to more wind, rain, and ice – WHY? • H. CaCO3 Question • Think about a landslide. • What types of weathering are involved in a landslide? • Does anything else we have discussed happen during a landslide?