LEARNING TARGET: I will understand and be able to identify different types of weathering.
VOCABULARY (We will do vocabulary boxes for each word.)
- sediment-solid material that is moved and deposited in a new location.
- sediment examples– Rocks, minerals, the remains of plants and animals. May be as small as a grain of sand or as large as a boulder.
- landform-A natural feature on the Earth’s surface.
- landform examples-Four major types: mountains, hills, plateaus, and plains. Minor include: buttes, canyons, valleys, basins, deltas and many, many others.
- weathering– The breaking down of rocks and other materials on the Earth’s surface.
OVERVIEW: Weathering, Erosion, and Deposition
- Crash Course– https://www.youtube.com/watch?v=R-Iak3Wvh9c
- Weathering, Erosion, and Deposition: https://www.youtube.com/watch?v=ZD_smP5l0e8
- Great Website for Everything– http://mrswarnerarlington.weebly.com/unit-3–changes-to-earths-surface.html
JOURNAL ENTRY: INPUT WEATHERING
- Title and date your page.
- Write the definition of weathering under the title.
- Glue the foldable in your journal so that it may open (see picture below).
- Use the resources below the journal entry description to fill in the information on the types of weathering.
- Open each flap. On the lined journal page, write the name of the type of weathering, the definition and/or description.
- On the opposite side (see image below) find three different types of this kind of weathering and describe how each happens.
- Finally- draw and color one example of each type on the outside of the “flap” as shown above.
- PHYSICAL WEATHERING-The breaking down of rocks and earth without changing the chemical make-up. They are broken apart by a physical force.
- BIOLOGICAL WEATHERING-The breaking down of rocks and earth by living organisms such as plants, animals, and bacteria. Can be physical or chemical.
- CHEMICAL WEATHERING– The breaking down of rocks and earth due to chemical reactions that happen between the minerals in rocks and the environment.
THE MAIN TYPES OF WEATHERING: Chemical, Physical, and Biological (Journal page entry)
- BBC Weathering– http://www.bbc.co.uk/bitesize/ks3/science/environment_earth_universe/rock_cycle/revision/6/
- The Geological Society: Weathering- https://www.geolsoc.org.uk/ks3/gsl/education/resources/rockcycle/page3461.html
NOTE: Sometimes weathering is described as MECHANICAL and CHEMICAL.
Weathering can be sorted into three groups: PHYSICAL, CHEMICAL, and BIOLOGICAL. People also sort weathering into two groups: MECHANICAL and CHEMICAL.
What’s the difference?
- MECHANICAL weathering is basically includes all PHYSICAL weathering with BIOLOGICAL actions that break down the earth such as roots growing into rocks and animals burrowing through the ground.
- CHEMICAL weathering includes all of the chemical break down of rocks including acids produced by plants that weaken and break down the rocks and the earth.