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