Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 191 · 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.True or false: a magnetic chess set works by air pressure. (a) False (b) True
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a battery cell (d) a balloon
3. 3.⚖️ 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 change it (b) we keep it the same (c) we measure it
4. 4.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.⚖️ 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
6. 6.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
8. 8.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a sink or a bucket
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a mirror (d) a balloon
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a glass of water (d) yeast
13. 13.True or false: a drinking straw works by air pressure. (a) True (b) False
14. 14.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
16. 16.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a vacuum cleaner (d) a compass needle
17. 17.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
18. 18.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) the card gets wet (c) it looks nicer (d) water is heavier
20. 20.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
21. 21.True or false: a suction hook works by air pressure. (a) True (b) False
22. 22.⚖️ 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) False (b) True
23. 23.🛟 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
24. 24.True or false: a glass of water is 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 “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a stiff postcard (d) a glass of water
28. 28.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a magnetic chess set (d) a suction hook
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a balloon
30. 30.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a fridge magnet
32. 32.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🔍 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
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a drinking straw (d) a medicine dropper
36. 36.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a fridge magnet
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a towel (d) a stiff postcard
39. 39.True or false: a bicycle pump works by magnetism. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic pin holder (d) a magnetic chess set

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