Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 375 · 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 towel is not needed for the card-on-a-glass trick. (a) False (b) True
2. 2.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
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 change it (b) we measure it (c) we keep it the same
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) yeast (d) a towel
6. 6.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
12. 12.🥛 Which of these works by magnetism? (a) a drinking straw (b) a compass needle (c) a suction hook (d) a medicine dropper
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a balloon (d) a sink or a bucket
14. 14.True or false: a suction hook works by air pressure. (a) True (b) False
15. 15.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a magnetic chess set
16. 16.🛟 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
17. 17.⚖️ 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 card (b) whether the card stays (c) how full the glass is (d) the same glass
18. 18.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a fridge magnet
19. 19.⚖️ 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) True (b) False
20. 20.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🔍 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 water turns to ice (c) the card flies away (d) the glass breaks
22. 22.🔮 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 cap is sticky (d) the bottle is magnetic
23. 23.⚖️ 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
24. 24.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.True or false: a fridge magnet works by magnetism. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a bicycle pump (d) a compass needle
28. 28.⚖️ 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 card
29. 29.⚖️ 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 measure it (b) we change it (c) we keep it the same
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 the one thing we change. (a) False (b) True
31. 31.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.⚖️ 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 measure it (c) we keep it the same
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a stiff postcard (d) a towel
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🥛 Which of these works by magnetism? (a) a drinking straw (b) a fridge magnet (c) a suction hook (d) a bicycle pump
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a magnet

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