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.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) vinegar (c) turmeric powder (d) a balloon
- 2.True or false: water from the oars goes backward. (a) False (b) True
- 3.🧺 Which of these is not needed for the balloon rocket? (a) a long string (b) a mirror (c) a balloon (d) two chairs
- 4.🚀 In “push back, move forward”, which way does air from the balloon go? (a) goes forward (b) goes backward
- 5.🎈 Air rushes out of the back of the balloon. Which way does the balloon move? (a) straight down (b) forward (c) backward (d) it stays still
- 6.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same tape”? (a) we keep it the same (b) we measure it (c) we change it
- 7.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same string is kept the same. (a) True (b) False
- 8.True or false: water a swimmer pushes goes backward. (a) False (b) True
- 9.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a mirror (c) a balloon rocket (d) a sundial
- 10.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is kept the same. (a) True (b) False
- 11.⚖️ 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
- 12.🧺 Do we need a drinking straw for the balloon rocket? (a) needed (b) not needed
- 13.🎈 When does the balloon rocket stop? (a) it never stops (b) when it gets cold (c) when the air runs out (d) when it turns blue
- 14.⚖️ 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
- 15.⚖️ Fair test — does a bigger balloon go farther along the string? Which of these is the one thing we change? (a) how big we blow it (b) the slope of the string (c) the same tape (d) the same string
- 16.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same tape is what we measure. (a) True (b) False
- 17.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we keep it the same (c) we change it
- 18.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a drinking straw (b) yeast (c) a balloon (d) a long string
- 19.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we keep it the same (b) we change it (c) we measure it
- 20.🚀 Which of these goes backward? (a) gas from the rocket (b) the rocket (c) the rowing boat (d) the swimmer
- 21.🛟 Why should you not over-blow the balloon? (a) it gets too heavy (b) it can pop loudly (c) it turns into a kite (d) it changes colour
- 22.⚖️ 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 straw
- 23.🛟 Which is a safe rule for the balloon rocket? (a) keep it away from faces (b) put string round a neck (c) blow it till it bursts (d) aim it at your friend
- 24.🎈 Why does the balloon rocket move along the string? (a) escaping air pushes it (b) the string pulls it (c) the straw is heavy (d) a magnet pulls it
- 25.🧺 Do we need a magnet for the balloon rocket? (a) not needed (b) needed
- 26.🧺 Which of these is not needed for the balloon rocket? (a) two chairs (b) a drinking straw (c) a long string (d) turmeric powder
- 27.🚀 Which of these goes backward? (a) water from the oars (b) the balloon (c) the swimmer (d) the rowing boat
- 28.🚀 In “push back, move forward”, which way does the balloon go? (a) goes forward (b) goes backward
- 29.True or false: gas from the rocket goes backward. (a) False (b) True
- 30.🧺 Do we need turmeric powder for the balloon rocket? (a) needed (b) not needed
- 31.True or false: vinegar is not needed for the balloon rocket. (a) True (b) False
- 32.True or false: a balloon is not needed for the balloon rocket. (a) False (b) True
- 33.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) turmeric powder (b) a long string (c) sticky tape (d) two chairs
- 34.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the slope of the string is the one thing we change. (a) True (b) False
- 35.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: the same straw is the one thing we change. (a) False (b) True
- 36.🧺 Which of these is needed for the balloon rocket? (a) a mirror (b) turmeric powder (c) a magnet (d) sticky tape
- 37.🚀 In “push back, move forward”, which way does gas from the rocket go? (a) goes forward (b) goes backward
- 38.True or false: water from the oars goes forward. (a) False (b) True
- 39.🧺 Three of these are needed for the balloon rocket. Which one is NOT needed? (a) a balloon (b) a long string (c) a magnet (d) sticky tape
- 40.True or false: sticky tape is not needed for the balloon rocket. (a) True (b) False
Answer key
- a balloon
- True
- a mirror
- goes backward
- forward
- we keep it the same
- True
- True
- a balloon rocket
- False
- True
- needed
- when the air runs out
- True
- how big we blow it
- False
- we change it
- yeast
- we keep it the same
- gas from the rocket
- it can pop loudly
- the same straw
- keep it away from faces
- escaping air pushes it
- not needed
- turmeric powder
- water from the oars
- goes forward
- True
- not needed
- True
- False
- turmeric powder
- False
- False
- sticky tape
- goes backward
- False
- a magnet
- False
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