Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 533 · 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 glass of water (b) a towel (c) yeast (d) a stiff postcard
2. 2.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
3. 3.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
4. 4.⚖️ 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) False (b) True
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a towel
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a mirror (d) a battery cell
7. 7.⚖️ 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) the way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
8. 8.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
9. 9.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a drinking straw (d) a fridge magnet
10. 10.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.⚖️ 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
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to grow plants (d) to make it rain
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
18. 18.⚖️ 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 card (b) how full the glass is (c) whether the card stays (d) the way we turn it
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a stiff postcard
20. 20.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a suction hook (d) a magnetic pin holder
23. 23.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a suction hook (d) a compass needle
25. 25.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 glass”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a mirror (d) a towel
31. 31.⚖️ 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
32. 32.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a balloon
34. 34.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a magnetic chess set
35. 35.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a bicycle pump (d) a magnetic chess set
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
40. 40.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic pin holder

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