Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 497 · 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.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
4. 4.⚖️ 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) whether the card stays (b) the way we turn it (c) the same card (d) the same glass
5. 5.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) turmeric powder (d) a magnet
8. 8.⚖️ 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) True (b) False
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) the same glass (c) the same card (d) whether the card stays
10. 10.⚖️ 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) False (b) True
11. 11.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a magnetic pin holder
12. 12.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
14. 14.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
15. 15.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
17. 17.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) the card gets wet (d) water is heavier
18. 18.⚖️ 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
19. 19.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.⚖️ 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) how full the glass is (c) whether the card stays
22. 22.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a bicycle pump (c) a fridge magnet (d) a magnetic chess set
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
28. 28.True or false: a magnetic chess set works by magnetism. (a) True (b) False
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
30. 30.⚖️ 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 kept the same. (a) False (b) True
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
32. 32.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
35. 35.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a glass of water
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🧺 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 sink or a bucket

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