5.2 Weathering and Soil

5.2 Weathering and Soil

Earth Science

Quick Review

​Mechanical Weathering: Occurs when physical forces break rock into smaller pieces without changing the rock's mineral composition.

​ex. Breaking a rock into smaller pieces

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​Chemical Weathering: Transformation of rock into one or more new compounds.

​ex. Oxygen reacting with iron to form rust

Multiple Choice

What happens to the mineral composition of a rock during Mechanical weathering?

• The rock is broken down into smaller pieces but the mineral composition remains the same

• The mineral composition is chemically changed

​Self research: Why is Soil important?

​-Soil is the layer or rock and mineral fragments that supports the growth of plants!

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​-Watch the youtube video and answer the question below.

​ -https://www.youtube.com/watch?v=uUCD19mEliU

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​-How do human activities affect the rate of soil erosion?

​ -Would you stay if your home became a desert?

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Open Ended

Answer the two questions: What is desertification? Would you move if your home became a desert?

​10/8 - Assignments

​- 10/8 - Edpuzzle - Erosion and Vegetation

​- 10/8 - Soil Quiz