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weathering erosion WS

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Weathering and erosion

1 Some words in the information below have incorrect spelling.

• Use the word bank to help you identify the misspelt words.

• Highlight each one and write the correct spelling above it.

• Then rewrite the information correctly in your workbook.

WORD BANK

• weathering

• chemical

• pieces

• erosion

• removing

• pressure

• biological

• rock

• reaction

• physical

• substance

• freezes

1. _____________ breaks a rock down into small pieces.

2. _____________ is the slow process of _____________ pieces of weathered rock by the action of wind, rivers and waves.

3. The three main types of ___________ are chemical,___________ and biological.

4. ______________weathering occurs when acid rain falls onto rocks and there is a

______________, creating a new substance.

5. Physical weathering occurs when the rocks are broken into smaller pieces, and no new _____________is made.

6. One example of ____________weathering is when rocks are heated and expand in the heat of the day, and then cool and contract in the cold of night.

Thin ___________of rock flake off the surface and are further broken down into tiny ____________. Another example is when water gets into cracks in the rock and then ______________ in cold weather.

7. ______________weathering occurs when living things cause rocks to break apart. For example, the roots of plants can extend into cracks in the

__________. As they grow, they expand and put ____________ on the rock which causes it to break off.

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