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Transcript
Name:_____________________________ Date: _____________ Block: _____________________________ Review Worksheet – Mechanical and Chemical Weathering and Erosion Directions: From the list below sort the Weathering Processes into the correct column depending on whether each is an example of Mechanical (Physical) Weathering or Chemical Weathering. Frost Action Oxidation Animal Activity Acid rain Abrasion (Exfoliation) Water Dissolves Minerals in Rocks Thermal (Heat) Expansion & Contraction Root Wedging Carbonation (Dissolution) Hydrolysis Human Activity Hydration Mechanical (Physical) Weathering Chemical Weathering Directions: Complete each of the following short answers, using the terms found below. Oxygen Mineral Composition Climate Time Iron Water 1. Rust forms by ______________________, ___________________ and ____________________ interacting. Note: One of the forces is a gas, another is a mineral and one is a liquid. 2. The following forces can change the rate at which rocks weather: _______________________, ______________________________, and _____________________________. PDS/Earth Science and Honors Earth Science/December 11, 2009 Directions: Fill in the blanks with the correct choice of word(s) from the 2 lists in the box below. Note: A word may be used more than once. chemical weathering dry hot minerals humid surface area water cleavage roots fragments cold sun 1. The best conditions for chemical weathering to take place is a climate that is _________________ and __________________. 2. The best conditions for frost action to take place is a climate that is _________________ and __________________. 3. __________________ speeds up chemical weathering processes. 4. Mechanical weathering breaks down large rocks into smaller _______________. This enables the process of ______________ _______________ to take place faster and more easily due to an increase in the _______________ ________________ of exposed rock material. 5. Some rocks are more resistant to weathering than other rocks. This is because the ___________________ in the rocks are harder and more resistant to weathering. Directions: Match each of the following actions with the correct type of weathering (Mechanical or Chemical) that is ongoing. _____ 1. Roots uplifting sidewalk a. Weathering by the actions of animals _____ 2. Ice Wedging b. Chemical Weathering _____ 3. Chipmunks and Rabbits c. Mechanical weathering _____ 4. Acid Rain d. Weathering by the actions of plants Directions: Identify each statement below as a statement below as an example of Mechanical or Chemical weathering. Write “M” for Mechanical or “C” for Chemical in the blank provided. _____ 1. the wedging of tree roots along natural joints in granite _____ 2. limestone dissolved by carbonic acid _____ 3. the oxidation of minerals that contain iron _____ 4. animal burrows dug in rock that let in water and air _____ 5. repeated freezing and thawing of water that cracks rock PDS/Earth Science and Honors Earth Science/December 11, 2009 _____ 6. the action of water, salt and air on car fenders _____ 7. acids from plant roots that break up rocks _____ 8. formation of potholes in streets during severe winters _____ 9. raised sections of sidewalk along tree-lined streets _____ 10. a small rock falling from a cliff _____ 11. feldspar mixing with water and producing clay minerals _____ 12. halite in rocks dissolving in water _____ 13. decaying plants dissolving minerals in rocks _____ 14. tree roots cracking the concrete foundation of a house _____ 15. iron lawn furniture rusting outside _____ 16. leaves decaying in the forest PDS/Earth Science and Honors Earth Science/December 11, 2009