Chapter 3 Earth's Changing Surface
Storyboard Text
- Hey Alex! Science class yesterday was hard right?
- Actually yes I do have questions. Can you explain to me Chemical & Mechanical weathering please?
- Mechanical weatheringis weather that breaks rocks to smaller pieces. It means the rock changes without changing its composition. It steel has the same minerals just different than the regular form.
- Hey Via! I don't agree, class yesterday was very easy for me.
- Do you have any questions from the lecture?
- Erosions & earthquakes are one of the United State's greatest natural selection.
- Chemical weathering is changing the size of the rock and mechanical does not. It changes it composition. One mineral changes to another mineral.
- Erosion meansthe process of eroding or being eroded by wind, water, or other natural agents. "the problem of soil erosion". In other words it means crumbling.
- Anything else I need to know?
- Yes! You need to understand Erosions from waves. Waves erode sediment from cliffs and gorges.
- Alex I don't remember what are Glaciers? Can you please explain them to me?
- Glaciers are giant pieces of ice that they move really really slowly.
- Next up we have Erosions by Glaciers. It is plucking or abrasion. Plucking is when the ice freezes at the bottom of the glacier and it stays there.
- Abrasion is when the Glacier scratches the main rock. The bottom of the Glacier acts like a sandpaper. Because all the sediments are frozen in the rock and ice.
- Nope Alex. Thank you for explaining them to me.
- Thx you too
- Aw, no problem. Have a nice day now, ok?
- Any other questions Via?
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