Thursday 10 November 2011

Worksheet 15

Activity:

Categorise the following items into correct group.

· enables us to hold things

· spoils engines

· causes wear and tear

· enables us to move

· opposes and slows down motion

· enables the ladder to stay in place

· produces heat to light up a match

· enables us to sharpen a knife

Advantages of friction

Disadvantages of friction


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