Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 890 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🔮 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
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 card (b) the same glass (c) how full the glass is (d) the way we turn it
4. 4.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
6. 6.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) turmeric powder
8. 8.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
9. 9.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a magnet (d) a balloon
11. 11.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is hotter (d) it is magnetic
13. 13.⚖️ 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 the one thing we change. (a) True (b) False
14. 14.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
15. 15.⚖️ 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 change it (c) we keep it the same
16. 16.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
17. 17.True or false: a compass needle works by air pressure. (a) False (b) True
18. 18.🧺 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) yeast
19. 19.⚖️ 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
20. 20.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a magnetic chess set (d) a vacuum cleaner
22. 22.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
23. 23.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a glass of water (d) a sink or a bucket
26. 26.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.⚖️ 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 kept the same. (a) False (b) True
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
29. 29.True or false: a suction hook works by magnetism. (a) True (b) False
30. 30.⚖️ 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 card (b) whether the card stays (c) how full the glass is
31. 31.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.⚖️ 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
33. 33.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the glass breaks (d) the water turns to ice
34. 34.True or false: a fridge magnet works by magnetism. (a) False (b) True
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) turmeric powder (d) a magnet
37. 37.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a vacuum cleaner
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 what we measure. (a) False (b) True
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a sink or a bucket (d) a towel

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