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