Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 202 · 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a mirror (d) a stiff postcard
4. 4.⚖️ 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) how full the glass is (d) the same card
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.⚖️ 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
8. 8.⚖️ 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) True (b) False
9. 9.⚖️ 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
10. 10.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a towel
12. 12.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a balloon (d) a towel
16. 16.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a suction hook (d) a medicine dropper
17. 17.🛟 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
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) yeast
21. 21.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
22. 22.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.⚖️ 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
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
26. 26.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.⚖️ 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
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
31. 31.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a compass needle
33. 33.True or false: a medicine dropper works by magnetism. (a) False (b) True
34. 34.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.True or false: a suction hook works by air pressure. (a) False (b) True
36. 36.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
37. 37.True or false: a suction hook works by magnetism. (a) False (b) True
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 kept the same. (a) True (b) False
39. 39.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
40. 40.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism

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