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Year 9 Science practice questions

Five free Year 9 science questions across chemistry, physics and biology, with the answer and a short explanation for each.

Name ____________________Date ______________
  1. 1.Which particle in an atom has a negative charge?
    ProtonNeutronElectronNucleus
    Show answer
    Answer: Electron
    Protons are positive, neutrons have no charge, and electrons are negative. The nucleus holds the protons and neutrons.
  2. 2.In the reaction magnesium + oxygen → magnesium oxide, what is the product?
    MagnesiumOxygenMagnesium oxideHeat
    Show answer
    Answer: Magnesium oxide
    Reactants are on the left of the arrow and products are on the right. The new substance made is magnesium oxide.
  3. 3.Which part of the nervous system carries messages from the body to the brain?
    Sensory neuronsMotor neuronsMusclesBlood vessels
    Show answer
    Answer: Sensory neurons
    Sensory neurons carry messages from the senses to the brain and spinal cord. Motor neurons carry messages back out to the muscles.
  4. 4.In a food chain, grass → rabbit → fox, what is the rabbit?
    ProducerPrimary consumerSecondary consumerDecomposer
    Show answer
    Answer: Primary consumer
    Grass makes its own food (producer). The rabbit eats the producer, so it's the primary consumer. The fox is the secondary consumer.
  5. 5.A ball rolls down a hill. Which energy change happens?
    Kinetic to gravitational potentialGravitational potential to kineticChemical to lightSound to kinetic
    Show answer
    Answer: Gravitational potential to kinetic
    At the top the ball has stored (gravitational potential) energy. As it rolls down, that turns into movement (kinetic) energy.

Answers: Year 9 Science practice questions

  1. Electron. Protons are positive, neutrons have no charge, and electrons are negative. The nucleus holds the protons and neutrons.
  2. Magnesium oxide. Reactants are on the left of the arrow and products are on the right. The new substance made is magnesium oxide.
  3. Sensory neurons. Sensory neurons carry messages from the senses to the brain and spinal cord. Motor neurons carry messages back out to the muscles.
  4. Primary consumer. Grass makes its own food (producer). The rabbit eats the producer, so it's the primary consumer. The fox is the secondary consumer.
  5. Gravitational potential to kinetic. At the top the ball has stored (gravitational potential) energy. As it rolls down, that turns into movement (kinetic) energy.

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StudyHop is not affiliated with or endorsed by ACARA, NESA, the NSW Department of Education or any curriculum or exam authority. Names such as NAPLAN, Selective, OC, HSC and VCE describe the style of practice only. All questions here are original StudyHop questions, not official papers.