Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 209 · 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.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
3. 3.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
4. 4.⚖️ 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) whether the card stays (d) the same card
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a battery cell (d) a balloon
6. 6.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) the straw is magnetic (c) juice likes plastic (d) air pushes it up
7. 7.⚖️ 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
8. 8.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a drinking straw (d) a compass needle
9. 9.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
11. 11.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a magnetic chess set (d) a fridge magnet
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a battery cell
13. 13.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a suction hook (d) a drinking straw
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a battery cell (d) a sink or a bucket
17. 17.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
18. 18.🔮 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
19. 19.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
20. 20.True or false: a suction hook works by air pressure. (a) False (b) True
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
24. 24.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a magnetic chess set
27. 27.⚖️ 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 measure it (c) we keep it the same
28. 28.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
30. 30.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a fridge magnet
31. 31.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
32. 32.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a magnetic chess set
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) yeast (d) a stiff postcard
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is kept the same. (a) False (b) True
35. 35.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a towel
37. 37.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a bicycle pump (d) a vacuum cleaner
38. 38.True or false: a fridge magnet works by air pressure. (a) True (b) False
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
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 kept the same. (a) False (b) True

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