Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 762 · 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 is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a towel
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
3. 3.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a towel (d) a sink or a bucket
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.⚖️ 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 measure it (b) we change it (c) we keep it the same
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a stiff postcard (d) a balloon
8. 8.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) a magnet (d) the cold water
10. 10.True or false: a bicycle pump works by magnetism. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a towel (d) a balloon
12. 12.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a compass needle (d) a fridge magnet
13. 13.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a vacuum cleaner (d) a suction hook
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a towel (d) a stiff postcard
15. 15.True or false: a magnetic chess set works by air pressure. (a) False (b) True
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
21. 21.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.⚖️ 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
25. 25.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
26. 26.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the card stays on (d) the water turns to ice
27. 27.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a bicycle pump (d) a suction hook
28. 28.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a suction hook (d) a magnetic chess set
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a battery cell
30. 30.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a fridge magnet
31. 31.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.True or false: a suction hook works by air pressure. (a) False (b) True
33. 33.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
34. 34.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
35. 35.⚖️ 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
36. 36.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
37. 37.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
39. 39.🔮 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
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism

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