Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 836 · 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.True or false: a suction hook works by magnetism. (a) True (b) False
2. 2.🔮 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
3. 3.⚖️ 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) whether the card stays (c) the same card (d) how full the glass is
4. 4.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
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 way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) yeast (d) a towel
9. 9.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) turmeric powder (d) a glass of water
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a battery cell
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a towel (d) a stiff postcard
14. 14.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
15. 15.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🛟 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
17. 17.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
18. 18.True or false: a compass needle works by magnetism. (a) False (b) True
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a mirror (d) turmeric powder
20. 20.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a compass needle (d) a bicycle pump
23. 23.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a magnetic chess set (d) a vacuum cleaner
24. 24.🧺 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 stiff postcard (d) a towel
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? What do we do with “the same card”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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
28. 28.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
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.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 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 stiff postcard (d) a towel
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
37. 37.⚖️ 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
38. 38.True or false: a drinking straw works by magnetism. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) turmeric powder (c) a mirror (d) a stiff postcard

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