← Back to the activity

Class 5 The World Around Us — Energy — how things work

Say what energy does, name the sources a home and a vehicle run on, tell clean energy from fuels that pollute, and handle electricity safely.

Name: ________________________

  1. 1.What does energy efficiency mean?

    • a) Using less energy to do the same work
    • b) Making energy at home rather than buying it
    • c) Using energy from the Sun rather than from coal
    • d) Storing energy so it can be used later

  2. 2.Match each machine to the natural source of energy it draws on.

    • Solar panels
    • Windmills
    • Gharaats, the watermills of the hills
    • Wind
    • Sunlight
    • Flowing water

  3. 3.Two cups of water are filled at the same time, one left in the sunlight and one in the shade. Twenty minutes later the sunlit one is warmer. What does that show?

    • a) A cup in the sun holds less water than one in the shade
    • b) Water in the shade loses its heat to the ground
    • c) Sunlight gives us heat energy
    • d) Water is cooler when it is kept still

  4. 4.A dog runs, a bird flies, and you walk to school. Where does the energy for each of the three come from?

    • a) The warmth of the ground
    • b) Food
    • c) Sunlight falling on them
    • d) The air they breathe

  5. 5.Rubber bands are stretched round a cardboard box and plucked. What kind of energy does the chapter say this shows?

    • a) Heat energy
    • b) Sound energy
    • c) Light energy
    • d) Stored energy

  6. 6.This house draws on three natural sources of energy. Tap the one that works because the wind is blowing.

    Write the number of the part.

    1234

  7. 7.Electricity made from the wind, from water or from the Sun leaves behind no smoke and no waste. What two-word name does the chapter give it?

  8. 8.You blow up a balloon, hold the neck tight, then let go. The balloon shoots forward. What pushed it?

    • a) Your hand as you released the neck
    • b) The rubber shrinking back to its old size
    • c) The air rushing out of it
    • d) The air in the room pressing on the outside

Answer key — Class 5 The World Around Us — Energy — how things work

  1. 1. a) Using less energy to do the same work
  2. 2. Solar panels → Sunlight; Windmills → Wind; Gharaats, the watermills of the hills → Flowing water
  3. 3. c) Sunlight gives us heat energy
  4. 4. b) Food
  5. 5. b) Sound energy
  6. 6. 2 — The windmill
  7. 7. clean energy
  8. 8. c) The air rushing out of it