Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 598 · 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 magnetic chess set works by air pressure. (a) False (b) True
2. 2.⚖️ 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) True (b) False
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
4. 4.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
6. 6.True or false: a bicycle pump works by magnetism. (a) False (b) True
7. 7.True or false: a drinking straw works by magnetism. (a) True (b) False
8. 8.🥛 Which of these works by air pressure? (a) a suction hook (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
9. 9.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a fridge magnet
10. 10.True or false: a drinking straw works by air pressure. (a) True (b) False
11. 11.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a stiff postcard (d) a mirror
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a towel
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a magnet (d) a glass of water
17. 17.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.True or false: a bicycle pump works by air pressure. (a) True (b) False
21. 21.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
22. 22.⚖️ 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) the way we turn it (b) how full the glass is (c) whether the card stays
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
25. 25.⚖️ 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 way we turn it (b) how full the glass is (c) the same card (d) whether the card stays
26. 26.⚖️ 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 keep it the same (c) we change it
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a magnet (d) yeast
28. 28.⚖️ 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 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? True or false: the same card is the one thing we change. (a) True (b) False
30. 30.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
31. 31.True or false: a magnetic chess set works by magnetism. (a) True (b) False
32. 32.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a magnetic chess set
33. 33.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
34. 34.True or false: a suction hook works by air pressure. (a) False (b) True
35. 35.⚖️ 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
36. 36.🥛 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
37. 37.True or false: a medicine dropper works by magnetism. (a) False (b) True
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
39. 39.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a bicycle pump (d) a fridge magnet
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

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