Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 779 · 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.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a sink or bucket (d) over a laptop
2. 2.True or false: a magnetic chess set works by magnetism. (a) True (b) False
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) turmeric powder (d) a magnet
4. 4.⚖️ 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) whether the card stays (b) the same card (c) how full the glass is (d) the way we turn it
5. 5.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a magnetic pin holder (d) a drinking straw
6. 6.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
9. 9.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
10. 10.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) water is heavier (d) it looks nicer
11. 11.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a vacuum cleaner (d) a drinking straw
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
16. 16.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a suction hook
18. 18.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
19. 19.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a medicine dropper (d) a compass needle
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a stiff postcard (d) turmeric powder
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a drinking straw (d) a suction hook
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
26. 26.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
28. 28.⚖️ 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
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 card”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) turmeric powder (d) a sink or a bucket
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
33. 33.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.True or false: a bicycle pump works by magnetism. (a) True (b) False
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) yeast
36. 36.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
39. 39.⚖️ 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) True (b) False
40. 40.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed

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