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Science Physics Topics Flashcards

6 cards from real PSLE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Science Physics Topics flashcards as text

  1. What form of energy does a moving car have?

    Answer: Kinetic energy

    A moving car has kinetic energy — the energy of motion. The faster it moves, the more kinetic energy it has.

  2. Which material is a good conductor of electricity?

    Answer: Copper

    Copper is an excellent conductor of electricity because it allows electric charges to flow through it easily. That is why wires are often made of copper.

  3. What is the SI unit of force?

    Answer: Newton

    The Newton (N) is the SI unit of force, named after Sir Isaac Newton. 1 N is the force needed to accelerate 1 kg by 1 m/s².

  4. Which of the following is a source of light?

    Answer: Sun

    The Sun produces its own light through nuclear fusion. The Moon and mirrors only reflect light from other sources.

  5. What happens to the shadow of an object when the light source moves closer to it?

    Answer: The shadow gets larger

    When the light source moves closer to an object, the shadow becomes larger because the object blocks a greater proportion of the light.

  6. Which type of force acts between two surfaces in contact and opposes motion?

    Answer: Friction

    Friction is a force that acts between surfaces in contact and opposes the movement of one surface over another.

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