Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 558 · 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 of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a compass needle (d) a drinking straw
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a balloon (d) a battery cell
4. 4.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
6. 6.🧺 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 glass of water (c) a towel (d) a balloon
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is what we measure? (a) how full the glass is (b) the same card (c) the same glass (d) whether the card stays
8. 8.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a drinking straw (d) a magnetic chess set
9. 9.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a compass needle (d) a magnetic chess set
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
11. 11.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
15. 15.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a suction hook
16. 16.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a suction hook
18. 18.⚖️ 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 kept the same. (a) False (b) True
19. 19.True or false: a suction hook works by air pressure. (a) True (b) False
20. 20.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🔮 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
22. 22.True or false: a medicine dropper works by magnetism. (a) False (b) True
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) whether the card stays (b) how full the glass is (c) the way we turn it
24. 24.🔮 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
25. 25.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a suction hook (d) a medicine dropper
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a battery cell (d) a stiff postcard
27. 27.True or false: a compass needle works by air pressure. (a) False (b) True
28. 28.⚖️ 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) whether the card stays (c) how full the glass is (d) the same glass
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) yeast (d) a towel
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a mirror (d) a glass of water
32. 32.⚖️ 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 what we measure. (a) True (b) False
33. 33.True or false: a compass needle works by magnetism. (a) False (b) True
34. 34.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
35. 35.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
36. 36.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a glass of water (d) a magnet
38. 38.⚖️ 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 keep it the same (c) we measure it
39. 39.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
40. 40.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism

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