Weathering

1. Weathering Bust a move!

2. Let’s start our review with this… Rock Cycle Song Weathering and Erosion in 60 Seconds

3. Changes At Earth's Surface Think About These: Water Wind Ice Erosion and weathering change rocks and land formations. What changes do you see?

4. What is Erosion? • Erosion is defined as removal of rocks and soil by wind, water, ice and gravity • Wind, water, ice and gravity are also known as the agents of erosion • Sediment is material moved by erosion

5. Weathering vs. Erosion Weathering involves two processes Physical and Chemical Often work together to break down rocks Both processes occur in place No movement is involved in weathering

6. Deposition Happens where agents of erosion deposit sediment

7. Wind Erosion Wind can carry material from one place to another (especially sand & clay) As wind blows, it picks up small particles of sand/sediment and blasts large rocks, cutting and shaping the rock Intensity of wind erosion is determined by: Sum (amount of sand), Speed, Slope, & Surface

8. Wind Erosion

9. Water Erosion When rain falls it can evaporate, sink into the ground, or flow over the land as runoff When it flows over land, erosion occurs Runoff picks up pieces of rock and "runs" downhill cutting tiny grooves into the land How much erosion takes place is determined by the: Sum (amount of water), Slope, Speed, and Surface

10. Water Erosion

11. Ice Erosion Glaciers wear down landscape, picking up & carrying debris across the land along with ice Glaciers pick up & carry sediment that ranges in size from sand grains to boulders bigger than houses Moving like a bulldozer, a single glacier can move millions of tons of material How much erosion takes place is determined by the: Sum (Glaciers are massive!), Slope, Speed, and Surface

12. Ice Erosion

13. A Cycle of Many Pathways Forces deep inside Earth and at the surface produce a slow cycle that builds, destroys, and changes the rocks in the crust.

14. Igneous Rock Igneous rock comes from cooled magma and lava. What are some names of igneous rock?

15. Sedimentary Rock Pieces of rock erode and pile up in layers to create sedimentary rocks. This is where you can find fossils. What other types of rock are sedimentary rocks?

16. Metamorphic Rocks Metamorphic rock are sedimentary or igneous rocks that have been changed under pressure while deep in the crust of the earth. What kinds of rocks are metamorphic rock?

17. Rock Types • Collect the rocks and take notes onRock Collection • Take the quiz and record your score on Identify Rock Types • Review and take notes about the Rock Cycle • Take the Rock Cycle Quiz • Take notes on Interesting Facts about Erosion(if the information is already in your notes you do not have to write it down again, but it must be important if you have seen it more than one time…..)

18. Study Jams Write down vocabulary, watch video or slide show and take notes, and take test (record how you did in your notes) • Weathering and Erosion • Sedimentary • Igneous Rock • Metamorphic Rock • Rock Cycle • Sedimentary Rock • Minerals