Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 169 · 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) needed (b) not needed
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a glass of water (d) a towel
3. 3.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🛟 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
5. 5.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a stiff postcard (d) a glass of water
8. 8.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass (d) the way we turn it
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a towel (d) yeast
11. 11.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a medicine dropper
13. 13.True or false: a bicycle pump works by magnetism. (a) True (b) False
14. 14.⚖️ 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 same card (c) the same glass (d) whether the card stays
15. 15.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a drinking straw (d) a magnetic pin holder
16. 16.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) a battery cell
18. 18.⚖️ 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
19. 19.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.⚖️ 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 change it (c) we keep it the same
23. 23.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner
24. 24.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.True or false: a compass needle works by magnetism. (a) False (b) True
26. 26.⚖️ 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
27. 27.🛟 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
28. 28.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.⚖️ 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
31. 31.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 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) turmeric powder (d) a sink or a bucket
33. 33.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
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 card”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
37. 37.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a drinking straw (d) a suction hook
39. 39.⚖️ 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
40. 40.⚖️ 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) True (b) False

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