Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 752 · 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 suction hook works by magnetism. (a) True (b) False
2. 2.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
3. 3.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🔮 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
6. 6.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
11. 11.⚖️ 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 glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
12. 12.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a bicycle pump
14. 14.⚖️ 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) whether the card stays (c) the way we turn it (d) the same glass
15. 15.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a fridge magnet
16. 16.🛟 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 hotter (d) it is magnetic
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) turmeric powder (d) a magnet
18. 18.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a towel (d) a sink or a bucket
21. 21.⚖️ 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
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
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 the one thing we change. (a) True (b) False
24. 24.⚖️ 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
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
26. 26.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
28. 28.True or false: a magnetic chess set works by magnetism. (a) True (b) False
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a battery cell (d) a towel
30. 30.🧺 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 sink or a bucket (d) a mirror
31. 31.True or false: a suction hook works by air pressure. (a) False (b) True
32. 32.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.True or false: a medicine dropper works by magnetism. (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: the same card is kept the same. (a) False (b) True
35. 35.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.True or false: a drinking straw works by magnetism. (a) False (b) True
39. 39.True or false: a bicycle pump works by magnetism. (a) True (b) False
40. 40.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed

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