Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 59 · 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.⚖️ 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
2. 2.🛟 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
3. 3.⚖️ 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
4. 4.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
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 keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
9. 9.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a sink or a bucket (d) a stiff postcard
11. 11.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
13. 13.🧺 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 mirror (d) a glass of water
14. 14.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
17. 17.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a medicine dropper (d) a compass needle
22. 22.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
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 what we measure. (a) True (b) False
24. 24.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.⚖️ 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) True (b) False
26. 26.⚖️ 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
27. 27.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
28. 28.⚖️ 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) the same glass (b) the way we turn it (c) the same card (d) how full the glass is
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a glass of water (d) a towel
31. 31.🧺 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) a sink or a bucket (d) turmeric powder
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a suction hook (d) a drinking straw
34. 34.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
35. 35.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) turmeric powder (d) yeast
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) air pushes it up (d) the straw is magnetic
40. 40.True or false: a magnetic pin holder works by air pressure. (a) True (b) False

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