Heat

Which of the following statement(s) is/are true? (You can choose more than one option)

• The metal plate gained coldness from the ice.

• The metal plate lost heat to the ice.

• The ice lost heat to the metal plate.

• The ice gained heat from the metal plate.

The temperature of the tea will (a) _________ and the temperature of water will (b)_________.

• (a) increase (b) increase

• (a) increase (b) decrease

• (a) decrease (b) increase

• (a) decrease (b) decrease

Both beakers of water were heated to 60^oC. Which beaker of water has more heat energy? Why? (You can choose more than one option)

• Beaker X

• Beaker Y

• Beaker X has less water than Beaker Y.

• Beaker Y has more water than Beaker X.

The wires are hung loosely so that they can (a)_________________ and (b)_________________ without snapping on a cold day.

• (a) gain heat (b) expand

• (a) gain heat (b) contract

• (a) lose heat (b) contract

• (a) lose heat (b) expand

The stopper popped out because the air in the jar (a) __________ and (b) ______________.

• (a) lost heat (b) contracted

• (a) lost heat (b) expanded

• (a) gained heat (b) expanded

• (a) gained heat (b) contracted

Which container has the most amount of heat?

• Container A

• Container B

• Container C

• Container D

Which of the following are sources of heat? (You can choose more than one option)

• Fire

• Jacket

• Burning candle

• Fur

Peter observed that all the thumbtacks dropped at the same time. Which rod is the best conductor of heat?

• Rod W

• Rod X

• Rod Y

• Rod Z

Mrs Lim is going on a picnic and she wants to choose containers to keep her hot coffee warm and chilled Ribena cold for the longest time. Which material should she choose?

• Coffee: Best conductor of heat

  Ribena: Best conductor of heat

• Coffee: Best conductor of heat

  Ribena: Poorest conductor of heat

• Coffee: Poorest conductor of heat

  Ribena: Best conductor of heat

• Coffee: Poorest conductor of heat

  Ribena: Poorest conductor of heat

The gaps seen in train tracks allow the tracks to (a) ____________ and (b) ______________ on a hot day without (c) __________. (You can choose more than one option)

• (a) gain heat (b) expand

• (a) lose heat (b) contract

• (c) buckling

• (c) snapping