Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 72 · 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.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
4. 4.True or false: a towel is not needed for the card-on-a-glass trick. (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 “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a vacuum cleaner (d) a magnetic chess set
7. 7.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a suction hook (d) a fridge magnet
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 same glass”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) it looks nicer (d) water is heavier
10. 10.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a compass needle
11. 11.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🧺 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 towel (d) yeast
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a magnet (d) a mirror
14. 14.⚖️ 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 kept the same. (a) False (b) True
15. 15.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a drinking straw
16. 16.⚖️ 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
17. 17.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
18. 18.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
20. 20.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.⚖️ 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) False (b) True
22. 22.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a towel
24. 24.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a compass needle
25. 25.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
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 way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
27. 27.🛟 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
28. 28.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
31. 31.⚖️ 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 same card (b) how full the glass is (c) whether the card stays
32. 32.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a compass needle
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a vacuum cleaner (d) a fridge magnet
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook

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