Heat PSLE type 1

Metal lid was not able to be removed before hot water was poured onto the glass jar.

Which statement best explained why the cover can be taken out after the pouring of hot water?

• The metal lid expanded.

• The glass jar expanded.

• The metal lid expanded more than the glass jar.

• The glass jar contracted more than the metal lid.

The ball was not able to pass through the ring.

Which of the following combination will most likely make the ball pass through the ring?

• Heat the ball and the ring.

• Cool the ball and the ring.

• Heat the ball but cool the ring.

• Heat the ring but cool the ball.

The answer for the question is (3).

Which of the following is the best explanation?

• Water is a poor conductor of heat.

• Water is a good conductor of heat.

• Water is a better conductor of heat than air.

• Water is a better conductor of heat than air and water can evaporate to take away heat.

Which of the following statements is true about the temperature of the chopsticks when Leonard touched them?

• Both chopsticks had the same temperature.

• Aluminium chopstick had a higher temperature than wooden chopstick.

• Aluminium chopstick had a lower temperature than wooden chopstick.

• Temperature of wooden chopstick reduced faster than the aluminium chopstick.

Which graph showed that two objects of different temperature cooled down to room temperature?

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The graph recorded the temperature of water in three different containers A, B and C.

Which graph showed that the three containers of water were heated and container B was the poorest conductor of heat?

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Which statement below was the cause of "heat flowed from P to Q"?

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