Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 62 · 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 way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
5. 5.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
6. 6.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
7. 7.⚖️ 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 glass (b) how full the glass is (c) the same card (d) whether the card stays
8. 8.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a fridge magnet
10. 10.True or false: a medicine dropper works by air pressure. (a) True (b) False
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a sink or a bucket (d) a battery cell
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
14. 14.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) friction (d) air pressure
17. 17.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
19. 19.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🧺 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 towel
22. 22.⚖️ 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
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a stiff postcard
27. 27.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card (d) the way we turn it
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a balloon (d) a glass of water
32. 32.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 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 towel (d) a stiff postcard
34. 34.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
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 kept the same. (a) False (b) True
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.⚖️ 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
38. 38.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
40. 40.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure

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