Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 193 · 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.🔮 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 grow plants (d) to catch any spills
2. 2.True or false: a compass needle works by air pressure. (a) False (b) True
3. 3.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) turmeric powder (d) a towel
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a glass of water (d) a magnet
7. 7.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.True or false: a drinking straw works by magnetism. (a) True (b) False
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a magnet (d) turmeric powder
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
12. 12.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a glass of water
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a glass of water (d) a stiff postcard
15. 15.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a suction hook (d) a drinking straw
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
18. 18.🛟 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
19. 19.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a medicine dropper
20. 20.⚖️ 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
21. 21.⚖️ 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 the one thing we change. (a) False (b) True
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a towel
23. 23.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.⚖️ 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
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.True or false: a drinking straw works by air pressure. (a) False (b) True
29. 29.True or false: a bicycle pump works by magnetism. (a) True (b) False
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic chess set (d) a fridge magnet
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a towel
32. 32.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a suction hook
33. 33.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
34. 34.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.⚖️ 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 what we measure. (a) False (b) True
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) turmeric powder (d) a sink or a bucket
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
39. 39.⚖️ 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) False (b) True
40. 40.⚖️ 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 way we turn it (c) whether the card stays

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