Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 849 · 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 a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a stiff postcard (d) a battery cell
6. 6.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a balloon
8. 8.True or false: a drinking straw works by magnetism. (a) False (b) True
9. 9.🧺 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 magnet (d) a sink or a bucket
10. 10.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a vacuum cleaner
11. 11.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
15. 15.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a vacuum cleaner (d) a fridge magnet
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) air inside pushes back (d) the cap is sticky
17. 17.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
20. 20.🧺 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 stiff postcard (c) a glass of water (d) a mirror
21. 21.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a magnetic chess set (d) a compass needle
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
23. 23.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.⚖️ 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) whether the card stays (c) the same glass
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a glass of water (d) yeast
29. 29.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a bicycle pump
30. 30.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.True or false: a suction hook works by air pressure. (a) True (b) False
32. 32.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
34. 34.🔮 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
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a drinking straw
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
38. 38.True or false: a compass needle works by air pressure. (a) True (b) False
39. 39.⚖️ 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 same glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a stiff postcard

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