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.🧺 Do we need yeast for the balloon rocket? (a) needed (b) not needed
- 2.🧺 Which of these is needed for the balloon rocket? (a) a balloon (b) vinegar (c) a mirror (d) turmeric powder
- 3.🚀 Which of these goes forward? (a) gas from the rocket (b) the rowing boat (c) water from the oars (d) water a swimmer pushes
- 4.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is kept the same. (a) False (b) True
- 5.True or false: a long string is needed for the balloon rocket. (a) True (b) False
- 6.🧺 Which of these is needed for the balloon rocket? (a) yeast (b) a battery cell (c) two chairs (d) vinegar
- 7.🛟 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
- 8.🧺 Do we need a long string for the balloon rocket? (a) needed (b) not needed
- 9.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) two chairs (c) sticky tape (d) vinegar
- 10.🔮 Predict: the string slopes uphill. What happens? (a) it travels less far (b) it speeds up (c) it travels farther (d) it goes backward first
- 11.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) yeast (b) a balloon (c) sticky tape (d) a drinking straw
- 12.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: distance it travels is what we measure. (a) False (b) True
- 13.True or false: a magnet is needed for the balloon rocket. (a) False (b) True
- 14.⚖️ 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
- 15.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is what we measure. (a) False (b) True
- 16.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) a long string (c) a mirror (d) sticky tape
- 17.🧺 Do we need a mirror for the balloon rocket? (a) not needed (b) needed
- 18.🚀 Which of these goes backward? (a) air from the balloon (b) the balloon (c) the rocket (d) the rowing boat
- 19.🧺 Do we need a balloon for the balloon rocket? (a) needed (b) not needed
- 20.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a long string (b) a balloon (c) two chairs (d) turmeric powder
- 21.🚀 In “push back, move forward”, which way does the swimmer go? (a) goes backward (b) goes forward
- 22.🎈 Why does the balloon rocket move along the string? (a) the string pulls it (b) the straw is heavy (c) a magnet pulls it (d) escaping air pushes it
- 23.🛟 Why should you not over-blow the balloon? (a) it turns into a kite (b) it gets too heavy (c) it can pop loudly (d) it changes colour
- 24.True or false: water from the oars goes forward. (a) False (b) True
- 25.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is kept the same. (a) False (b) True
- 26.🚀 Which of these goes forward? (a) air from the balloon (b) water from the oars (c) the swimmer (d) water a swimmer pushes
- 27.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a battery cell (b) a balloon (c) two chairs (d) a drinking straw
- 28.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) aim it at your friend (d) blow it till it bursts
- 29.True or false: a magnet is not needed for the balloon rocket. (a) True (b) False
- 30.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a magnet (b) two chairs (c) a drinking straw (d) sticky tape
- 31.True or false: yeast is needed for the balloon rocket. (a) False (b) True
- 32.🚀 In “push back, move forward”, which way does water a swimmer pushes go? (a) goes backward (b) goes forward
- 33.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) how big we blow it (b) distance it travels (c) the same string
- 34.True or false: a balloon is not needed for the balloon rocket. (a) True (b) False
- 35.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a mirror (b) a sundial (c) a balloon rocket (d) a fridge magnet
- 36.🧺 Do we need two chairs for the balloon rocket? (a) not needed (b) needed
- 37.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is kept the same? (a) the same tape (b) how big we blow it (c) distance it travels
- 38.🚀 Which of these goes forward? (a) the balloon (b) gas from the rocket (c) water from the oars (d) air from the balloon
- 39.True or false: the swimmer goes backward. (a) False (b) True
- 40.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is what we measure. (a) False (b) True
Answer key
- not needed
- a balloon
- the rowing boat
- False
- True
- two chairs
- throw them away safely
- needed
- vinegar
- it travels less far
- yeast
- True
- False
- True
- False
- a mirror
- not needed
- air from the balloon
- needed
- turmeric powder
- goes forward
- escaping air pushes it
- it can pop loudly
- False
- True
- the swimmer
- a battery cell
- keep it away from faces
- True
- a magnet
- False
- goes backward
- the same string
- False
- a balloon rocket
- needed
- the same tape
- the balloon
- False
- False
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