Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 278 · 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 sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a sink or a bucket
3. 3.True or false: a magnetic chess set works by air pressure. (a) False (b) True
4. 4.True or false: a drinking straw works by air pressure. (a) True (b) False
5. 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
9. 9.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
10. 10.🔮 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) water is hiding there (d) the cap is sticky
11. 11.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
16. 16.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.⚖️ 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 change it (c) we measure it
18. 18.🧺 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 glass of water (d) yeast
19. 19.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
21. 21.🔮 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
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
24. 24.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a suction hook
25. 25.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.True or false: a medicine dropper works by magnetism. (a) False (b) True
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a vacuum cleaner (d) a compass needle
29. 29.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
31. 31.⚖️ 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) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
32. 32.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a compass needle (d) a medicine dropper
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a vacuum cleaner
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a battery cell (d) a towel
37. 37.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a magnetic chess set (d) a compass needle
39. 39.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass

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