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Primary 3 Science Heat Quiz
Free P3 Science Heat quiz, Ox AI version, with questions, answers, and syllabus-aligned practice for Singapore students.
These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.
Questions
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Answers
Primary 3 Science Quiz – Heat: Answer Key
Answer 1.
(a) The Sun
Answer 2.
(a) friction
Answer 3.
(d) A plastic foam container
Answer 4.
(b) Temperature
Answer 5.
(c) the ball and the water reach the same temperature
Answer 6.
Any two: fire/candle flame, rubbing (friction), electric heater/kettle/hair dryer, hot stove, body warmth.
Answer 7.
Wool traps air, and trapped air is a poor conductor of heat, so less body heat escapes and the hands stay warm.
Answer 8.
Yes. Metal is a good conductor of heat, so heat from the soup travels along the spoon and makes it hot.
Answer 9.
The pan has a very high temperature, so heat flows quickly into the hand and can cause a painful burn.
Answer 10.
It melts from a solid into a liquid. Heat from the sun raises the chocolate's temperature until it melts.
Answer 11.
hotter; colder
Answer 12.
Wood and plastic are poor conductors (insulators) of heat, so heat does not easily reach your hand.
Answer 13.
- (a) True
- (b) False — even cold objects contain some heat.
Answer 14.
The black shirt. Dark surfaces absorb more heat than light-coloured surfaces.
Answer 15.
Heat travels from the Sun to the Earth by radiation (heat rays) through space.
Answer 16.
- (a) Cup B (the unwrapped cup).
- (b) The cloth trapped air, which is a poor conductor of heat, so Cup A lost heat to the surroundings more slowly.
Answer 17.
- (a) The butter at X.
- (b) Metal conducts heat from the hot end (near the flame) towards the cooler end, so the butter melts in order X, then Y, then Z.
Answer 18.
- Put the ice in a cooler box or wrap it in a thick towel/newspaper — trapped air is a poor conductor, so less heat reaches the ice.
- Keep the ice shaded or in a closed container — less heat from sunlight enters, so melting is slowed.
Answer 19.
Any two: use oven mitts or a dry towel; turn pot handles inward; walk, do not run, near stoves; ask an adult for help; keep flammable items away from flames.
Answer 20.
The warm water heats the air inside the bottle. Warm air expands and takes up more space, so it pushes into the balloon and inflates it. This shows that air expands when heated.