PSLE Science Made Simple: Heat Energy Quiz

What is the initial setup of the experiment described in the video?

• A deflated balloon is placed inside a flask.

• A balloon is filled with water and attached to a flask.

• A deflated balloon is attached to a flask and a candle flame is placed near it.

• A balloon is inflated and attached to a flask.

What happens to the air inside the flask when it is heated by the candle flame?

• The air remains the same in volume.

• The air expands and increases in volume.

• The air turns into a liquid.

• The air contracts and decreases in volume.

Why does the balloon inflate in the experiment?

• The balloon inflates because the flask is a poor conductor of heat.

• The balloon inflates because the air inside the flask contracts.

• The balloon inflates because the air inside the flask expands and occupies more space.

• The balloon inflates because the candle flame directly heats the balloon.

Which option correctly describes the outcome of the experiment?

• Air is a poor conductor of heat.

• The flask loses heat to the balloon.

• The air inside the flask gains heat and expands, inflating the balloon.

• The flask is a poor conductor of heat.

What is the main reason for eliminating option three in the analysis?

• The experiment proves that the flask is a good conductor of heat.

• The experiment indicates that the air inside the balloon is a poor conductor of heat.

• The experiment shows that the balloon is a poor conductor of heat.

• The experiment does not show that the flask is a poor conductor of heat.