P4 Science · Energy Forms and Uses (Light) · 203 questions · difficulty D1–D5 · Singapore MOE-aligned
Sample questions
SAMPLE 1
Ahmad shines a torch at a toy car in a dark room. Which of the following must happen for him to see the toy car?
A Light from the torch must reflect off the car into his eyes.
B The car must give out its own light.
C The torch must be pointed at his eyes.
D The room must be completely dark.
SAMPLE 2
During a school camping trip, Priya shines a torch at a tree from a distance of 3 metres. The tree is 2 metres tall. Which of the following best explains why she can see the tree?
A Light from the torch reflects off the tree into her eyes.
B Light from the torch travels from her eyes to the tree.
C The tree produces its own light that enters her eyes.
D Her eyes send out light that bounces off the tree.
SAMPLE 3
During a science demonstration, a teacher shines a torch at a small ball placed 30 cm away from a screen. The ball is 10 cm in diameter. If the torch is moved from 30 cm to 15 cm away from the ball, what happens to the size of the shadow on the screen?
A The shadow becomes larger.
B The shadow becomes smaller.
C The shadow stays the same size.
D The shadow disappears completely.
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