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