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Energy Explorations Worksheet

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Energy Explorations Worksheet

Energy is all around us, causing movement and other changes. Read the mini-investigation, then solve each challenge. Use evidence from the scenario and your science ideas.

The windy-day rocket test

Tevita and Mei stretched a string across a sheltered outdoor space and threaded a straw onto it. They tied the string between two supports, blew up a balloon without tying it, and taped the balloon to the straw. When they let go, air rushed out of the balloon and the balloon-straw rocket travelled along the string. On a second test, they used a balloon with more air. It travelled further, but they changed nothing else. They noticed that the rocket slowed down when it rubbed against the string.

Energy detective challenges

Answer each question using complete ideas where needed.

1.Which statement best describes energy?
  • Energy is what makes change happen, such as movement, heating or lighting.
  • Energy only exists inside batteries.
  • Energy is a material that can always be seen.
  • Energy means an object must be moving.
2.Select every example that shows energy being transferred or causing an effect: sunlight warming a pōhutukawa leaf; music making a drum skin vibrate; a parked bicycle not changing; a moving scooter; a heater warming a room.
3.Complete the energy-change description: The stretched, inflated balloon stores energy. As air rushes out, energy is transferred to the moving air and then to the rocket.
4.Why does the balloon rocket move forward when air rushes out backwards?
5.True or false? The test with more air in the balloon is a fair comparison if the only change is the amount of air.
TrueFalse
6.Tevita and Mei want to compare how far the rockets travel. Name two things they should keep the same in each test, apart from the amount of air.
7.They measure three distances for each balloon. The smaller-air balloon travels 110 cm, 120 cm and 115 cm. The more-air balloon travels 145 cm, 150 cm and 140 cm. Which balloon travelled further on average, and what is its average distance?
8.The rocket slowed as it rubbed against the string. What force caused this, and what happened to some of the movement energy?
9.Match each situation to the main energy effect: (a) a torch shining on a path; (b) a bell ringing; (c) warm hands near a heater. Effects: heat, light, sound.
  • a. Torch shining on a path
  • b. Bell ringing
  • c. Warm hands near a heater
  • Sound
  • Heat
  • Light
10.Wind can turn a turbine and make its blades move. Explain one way wind energy is similar to the energy in the balloon rocket test.

2 printable pages

  • Energy Explorations Worksheet, page 1 of 2: The windy-day rocket test, Energy detective challenges

    Page 1

  • Energy Explorations Worksheet, page 2 of 2: 5. True or false? The test with more air in the balloon is a fair comparison if the only…

    Page 2

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