Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 120 · 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 vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a suction hook
2. 2.🧺 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 towel (d) yeast
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
4. 4.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
5. 5.True or false: a drinking straw works by magnetism. (a) False (b) True
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a sink or a bucket (d) a stiff postcard
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a mirror
8. 8.🔮 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
9. 9.⚖️ 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) how full the glass is (c) whether the card stays
10. 10.⚖️ 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 measure it (c) we keep it the same
11. 11.⚖️ 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) True (b) False
12. 12.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic chess set (c) a drinking straw (d) a vacuum cleaner
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) yeast (c) a sink or a bucket (d) a glass of water
14. 14.True or false: a medicine dropper works by magnetism. (a) True (b) False
15. 15.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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 what we measure. (a) True (b) False
17. 17.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.True or false: a bicycle pump works by magnetism. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
23. 23.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
25. 25.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🔮 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 cool the glass (d) to grow plants
27. 27.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
29. 29.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a fridge magnet
30. 30.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) the same card
31. 31.⚖️ 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
32. 32.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
34. 34.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 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 sink or a bucket (d) a towel
36. 36.⚖️ 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 measure it (b) we change it (c) we keep it the same
37. 37.True or false: a compass needle works by air pressure. (a) False (b) True
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a battery cell (d) a glass of water
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a balloon (d) yeast
40. 40.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper

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