Curriculum Resources
Take learning to the next level and transform the way you teach with a vast library of ready-to-use, standards-aligned, adaptable curriculum resources. The resources listed below are either available with an Online Learning Subscription which allows you to instruct, assess and track student performance or as individual hands-on classroom resources which can be purchased. Choose from Multimedia Lessons, Curriculum Mastery Games, Flip Charts, Visual Learning Guides, Flash Cards, Vocabulary Cards, and Curriculum Modules available on our online store. PREMIUM ONLINE LEARNING SUBSCRIPTION OPTIONS
  • Select By Standard
    • General Science
    • Life Science / Biology
    • Human Body
    • Earth Science
    • Physical Science
    • Chemistry
    • Math
    • Language Arts
    • Social Studies

Mechanical and Chemical Weathering

Science, Grade 6


Table Of Contents: Mechanical and Chemical Weathering

1. Abrasion and Plant Growth
There are many examples of mechanical weathering. Abrasion occurs when one rock grinds against another. A rock can also break when plant roots grow into cracks on its surface.
2. Exfoliation and Frost Wedging
Exfoliation is a repeated cycle during which rocks expand in the daytime heat and contract at night, causing rocks to flake. Frost wedging occurs when cracks fill with water and undergo a repeated cycle of freezing and thawing, causing rocks to crack apart.
3. What is Chemical Weathering?
Chemical weathering involves the breaking down of rocks by chemical reactions. The three main chemical reactions that decompose rocks are acid reactions, oxidation and hydrolysis.
4. Natural Chemical Weathering
Acid-producing lichen and tree roots that eat through rock are natural sources of chemical weathering. Many minerals are also relatively unstable and deteriorate in the presence of water and natural chemicals. For example, the feldspar found in granite breaks down into clay.
5. Chemical Weathering and Pollution
Chemical weathering can be caused by pollution. Acid rain, created by the burning of fossil fuels, dissolves some types of rocks such as limestone.
© Copyright 2012-2019 NewPath Learning. All Rights Reserved. Privacy Notice * Terms of Use