Foundation Science Primary 6 Interactions

Siti applied some oil to the hinges of a squeaky door. The door stopped squeaking and could be opened more easily. Why did the oil help?

A Oil increases the strength of the hinges.
B Oil increases the mass of the door.
C Oil acts as a lubricant to reduce friction.
D Oil makes the door heavier so it opens faster.
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Worked Solution

Step 1: Squeaking is caused by friction between moving parts. Step [2-9]: Oil is a lubricant. Step [2-9]: Lubricants reduce friction, making movement smoother and quieter.

Correct answer: Oil acts as a lubricant to reduce friction.

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