Balloon Rocket STEM Worksheet
What you do (Push back, move forward): 1. Thread the string through the straw and tie it tightly between two chairs. 2. Blow up the balloon (not too much) and pinch its neck shut. 3. Tape the balloon to the straw, neck pointing backward. 4. Let go, measure how far it goes, and keep it away from faces.
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- 1.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) a drinking straw (c) sticky tape (d) a magnet
- 2.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we measure it (b) we keep it the same (c) we change it
- 3.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a balloon rocket (b) a mirror (c) a fridge magnet (d) a sundial
- 4.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) turmeric powder (c) a balloon (d) sticky tape
- 5.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) sticky tape (c) a balloon (d) yeast
- 6.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is what we measure? (a) the same straw (b) the same string (c) how big we blow it (d) distance it travels
- 7.🚀 Which of these goes backward? (a) the rowing boat (b) the rocket (c) the balloon (d) water a swimmer pushes
- 8.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) escaping air pushes it (c) a magnet pulls it (d) the straw is heavy
- 9.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it changes colour (d) it turns into a kite
- 10.🧺 Which of these is needed for the balloon rocket? (a) vinegar (b) a battery cell (c) a magnet (d) a drinking straw
- 11.🚀 Which of these goes backward? (a) the balloon (b) the swimmer (c) air from the balloon (d) the rocket
- 12.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it goes backward first (c) it travels farther (d) it speeds up
- 13.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a mirror (b) a drinking straw (c) a long string (d) two chairs
- 14.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we measure it (b) we change it (c) we keep it the same
- 15.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
- 16.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a long string (c) a magnet (d) a drinking straw
- 17.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) two chairs (b) sticky tape (c) vinegar (d) a drinking straw
- 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a long string (c) a balloon (d) two chairs
- 19.🧺 Which of these is needed for the balloon rocket? (a) a battery cell (b) a magnet (c) vinegar (d) sticky tape
- 20.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) backward (b) straight down (c) forward (d) it stays still
- 21.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
- 22.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) the same straw (b) the slope of the string (c) how big we blow it (d) distance it travels
- 23.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) True (b) False
- 24.True or false: water from the oars goes backward. (a) False (b) True
- 25.🧺 Do we need a battery cell for the balloon rocket? (a) not needed (b) needed
- 26.🎈 What is the job of the straw on the string? (a) it makes it heavier (b) it guides the balloon (c) it blows air in (d) it holds water
- 27.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
- 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is what we measure. (a) True (b) False
- 29.True or false: turmeric powder is needed for the balloon rocket. (a) False (b) True
- 30.🛟 What should you do with popped balloon pieces? (a) chew them (b) throw them away safely (c) keep them in your mouth (d) give them to a baby
- 31.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) True (b) False
- 32.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “distance it travels”? (a) we change it (b) we measure it (c) we keep it the same
- 33.True or false: air from the balloon goes forward. (a) True (b) False
- 34.🧺 Which of these is needed for the balloon rocket? (a) a long string (b) a magnet (c) turmeric powder (d) yeast
- 35.True or false: the rocket goes backward. (a) True (b) False
- 36.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is the one thing we change. (a) False (b) True
- 37.🧺 Do we need sticky tape for the balloon rocket? (a) needed (b) not needed
- 38.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same straw”? (a) we change it (b) we keep it the same (c) we measure it
- 39.🚀 In “push back, move forward”, which way does the rocket go? (a) goes backward (b) goes forward
- 40.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) two chairs (c) a battery cell (d) sticky tape
Answer key
- a magnet
- we keep it the same
- a balloon rocket
- turmeric powder
- yeast
- distance it travels
- water a swimmer pushes
- escaping air pushes it
- it can pop loudly
- a drinking straw
- air from the balloon
- it travels less far
- a mirror
- we keep it the same
- True
- a magnet
- vinegar
- a battery cell
- sticky tape
- forward
- True
- how big we blow it
- False
- True
- not needed
- it guides the balloon
- not needed
- False
- False
- throw them away safely
- True
- we measure it
- False
- a long string
- False
- False
- needed
- we keep it the same
- goes forward
- a battery cell
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids