Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 263 · 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.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is (d) the way we turn it
3. 3.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) the cap is sticky (d) water is hiding there
5. 5.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
7. 7.True or false: a bicycle pump works by air pressure. (a) True (b) False
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is kept the same. (a) False (b) True
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) yeast
10. 10.True or false: a drinking straw works by air pressure. (a) True (b) False
11. 11.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a mirror (d) a balloon
13. 13.True or false: a drinking straw works by magnetism. (a) True (b) False
14. 14.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) turmeric powder
19. 19.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a medicine dropper (d) a magnetic chess set
20. 20.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
22. 22.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a vacuum cleaner
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a sink or a bucket (d) a battery cell
27. 27.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
32. 32.🧺 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) a glass of water (d) a balloon
33. 33.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: how full the glass is is the one thing we change. (a) True (b) False
35. 35.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
36. 36.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
38. 38.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a mirror (d) a balloon
40. 40.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed

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