Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 899 · 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.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card stays on (d) the card flies away
2. 2.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.🧺 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 balloon (c) a glass of water (d) a stiff postcard
4. 4.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
7. 7.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
8. 8.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
9. 9.True or false: a drinking straw works by air pressure. (a) False (b) True
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a stiff postcard (d) a balloon
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a sink or a bucket (d) a stiff postcard
15. 15.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
16. 16.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic chess set
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a glass of water
18. 18.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.⚖️ 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 keep it the same (c) we change it
21. 21.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
22. 22.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
24. 24.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
26. 26.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a battery cell is not 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 is hotter (b) it will not break (c) it is magnetic (d) it is heavier
30. 30.True or false: a compass needle works by air pressure. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
33. 33.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a mirror
35. 35.True or false: a suction hook works by magnetism. (a) True (b) False
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) yeast (d) a sink or a bucket
37. 37.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) yeast
40. 40.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a drinking straw (d) a vacuum cleaner

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