Primary 4 Science: Heat Practice
Real Primary 4 Science questions on Heat, pulled directly from the Olibits question bank — the same questions a child would actually see, not separately written for this page.
Curriculum alignment
Science Teaching & Learning Syllabus, Primary Three to Six (MOE, 2023 syllabus)
Science is not a taught subject at P1/P2 under MOE's own syllabus — our P1/P2 Science content is offered as enrichment beyond the official syllabus, not as a claim of syllabus coverage at those grades.
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Real Heat practice questions
Why does a cup of hot soup become cooler when left on a table?
The soup loses its heat source completely
Cold flows from the surroundings into the soup
Heat flows from the surroundings into the soup
Heat flows from the hot soup to the cooler surroundings ✓
Since the soup is hotter than the air around it, heat flows out of the soup into the cooler surroundings.
On a sunny afternoon, a metal railing and a wooden railing had both been sitting in direct sunlight for the same length of time. When Aisha touched them, the metal railing felt much hotter than the wooden railing. What is the best explanation?
Metal conducts (transfers) heat more easily than wood, so it heated up faster ✓
Wood conducts heat more easily than metal, so it heated up faster
The metal railing happened to be in a sunnier spot
Wood does not absorb any heat from sunlight
Metal is a much better conductor of heat than wood, so under the same sunlight it heats up faster and feels hotter to touch.
A kitchen assistant is about to lift a hot pot by its handle. She can choose a bare metal handle, a handle wrapped in aluminium foil, a handle wrapped in a thin copper sheet, or a handle wrapped in thick cotton cloth. Which choice would best protect her hand from the heat?
Bare metal handle
Handle wrapped in aluminium foil
Handle wrapped in a thin copper sheet
Handle wrapped in thick cotton cloth ✓
Thick cotton cloth is an insulator that slows heat transfer, protecting the hand, while the other three options are all good conductors of heat.
The same metal ball that used to fit through a metal ring at room temperature no longer fits through it after being heated over a flame for a short time. What is the best explanation?
The ring shrank while the ball stayed the same size
The ball expanded (became slightly larger) after heating ✓
The heat made the ball heavier, not larger
The ball's shape changed randomly when heated
Heating caused the metal ball's particles to move further apart, so the ball expanded slightly and no longer fit through the ring.