Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 997 · 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.🧺 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 towel (c) a glass of water (d) a battery cell
2. 2.⚖️ 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
3. 3.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a magnetic chess set
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) yeast (d) a mirror
5. 5.⚖️ 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 same glass (b) the way we turn it (c) the same card (d) how full the glass is
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
7. 7.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
8. 8.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
9. 9.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a bicycle pump
10. 10.⚖️ 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
11. 11.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
14. 14.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
15. 15.⚖️ 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) False (b) True
16. 16.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
17. 17.True or false: a bicycle pump works by air pressure. (a) True (b) False
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a glass of water (d) turmeric powder
20. 20.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.⚖️ 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) whether the card stays (b) the same card (c) the way we turn it (d) how full the glass is
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
25. 25.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 heavier (d) it is magnetic
30. 30.⚖️ 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 what we measure. (a) True (b) False
31. 31.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a stiff postcard (d) a glass of water
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
39. 39.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) False (b) True

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