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Physical Science Principles Flashcards

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

Read the first 7 Physical Science Principles flashcards as text

  1. A 10 kg object accelerates at 3 m/s². What net force acts on it?

    Answer: 30 N

    Force equals mass times acceleration, so 10 kg × 3 m/s² = 30 N.

  2. Which form of energy is stored in a stretched spring?

    Answer: Elastic potential energy

    A stretched or compressed spring stores elastic potential energy.

  3. What happens to the wavelength of a wave if its frequency increases while speed stays constant?

    Answer: Wavelength decreases

    Since speed = frequency × wavelength, a higher frequency at constant speed means a shorter wavelength.

  4. Which of these is a chemical change rather than a physical change?

    Answer: Rusting iron

    Rusting forms a new substance (iron oxide), making it a chemical change.

  5. What is the SI unit of electric current?

    Answer: Ampere

    The ampere is the SI unit of electric current.

  6. An object at rest stays at rest unless acted on by a force. This describes which law?

    Answer: Newton's first law

    Newton's first law, the law of inertia, states objects resist changes in motion.

  7. Which subatomic particle carries a negative charge?

    Answer: Electron

    Electrons carry a negative electric charge.