Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 946 · 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) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
2. 2.⚖️ 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
3. 3.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
5. 5.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a drinking straw (d) a medicine dropper
6. 6.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a compass needle
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a stiff postcard (d) a towel
8. 8.🛟 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
9. 9.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a stiff postcard
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True
14. 14.🧺 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) yeast (d) a glass of water
15. 15.🔮 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
16. 16.True or false: a suction hook works by air pressure. (a) True (b) False
17. 17.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a medicine dropper (d) a magnetic pin holder
19. 19.True or false: a bicycle pump works by air pressure. (a) False (b) True
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a stiff postcard (d) a sink or a bucket
22. 22.⚖️ 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
23. 23.⚖️ 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) the same card (c) whether the card stays
24. 24.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
27. 27.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
28. 28.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
31. 31.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a sink or a bucket (d) a towel
33. 33.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a medicine dropper (d) a suction hook
34. 34.⚖️ 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
35. 35.⚖️ 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) the way we turn it (c) whether the card stays
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
37. 37.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.True or false: a drinking straw works by magnetism. (a) False (b) True
39. 39.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a vacuum cleaner (d) a bicycle pump
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False

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