Lesson 7, Unit 10

How does physical weathering change rocks? Give some examples of physical weathering.

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What is a synonym for contract?

• Shrink

• Expand

• big

• tall

What is ice wedging?

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Define physical and chemical weathering

Groups:

(a) Physical

,

(b) Chemical

• Heat

• Acidic Rain

• Minerals change

• Physical

• Minerals stay the same

• Chemical

The process that breaks down rocks and other materials on Earth's surface is called

• Weathering

• Erosion

• Deposition

• Decomposition

Which pair are homophones?

• care, car
• steep, stair

• bar, bear

• pair, pear