Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 80 · 40 questions

What you do (Air pushes): 1. Fill a plastic glass right to the top with water. 2. Lay the postcard flat on top, covering the rim. 3. Over a sink or bucket, hold the card and turn the glass upside down. 4. Slowly take your hand away from the card and watch.

1. 1.True or false: a medicine dropper works by air pressure. (a) False (b) True
2. 2.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a balloon (c) a glass of water (d) a stiff postcard
5. 5.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a mirror (d) a stiff postcard
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a magnet (c) a towel (d) a glass of water
10. 10.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
11. 11.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a stiff postcard (c) a mirror (d) a glass of water
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a magnet (d) a towel
17. 17.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
19. 19.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same glass
21. 21.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
22. 22.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a bicycle pump (d) a magnetic chess set
23. 23.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a balloon (d) a glass of water
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a magnet (d) a glass of water
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) how full the glass is (b) whether the card stays (c) the same card
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic pin holder (d) a vacuum cleaner
28. 28.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a suction hook (c) a drinking straw (d) a vacuum cleaner
29. 29.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) yeast (d) a glass of water
31. 31.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a drinking straw
32. 32.True or false: a bicycle pump works by magnetism. (a) True (b) False
33. 33.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the same card (b) how full the glass is (c) whether the card stays (d) the way we turn it
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) a towel (d) turmeric powder
38. 38.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False

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