Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 187 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a towel (d) a stiff postcard
2. 2.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
4. 4.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
5. 5.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
6. 6.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a towel (d) a stiff postcard
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to cool the glass (d) to grow plants
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
11. 11.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a glass of water (d) yeast
13. 13.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a towel
15. 15.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a towel (c) a glass of water (d) a magnet
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 the one thing we change. (a) True (b) False
19. 19.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
23. 23.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a magnetic pin holder (d) a vacuum cleaner
26. 26.True or false: a fridge magnet works by magnetism. (a) False (b) True
27. 27.⚖️ 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 keep it the same (c) we measure it
28. 28.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
29. 29.⚖️ 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 way we turn it (b) the same glass (c) how full the glass is (d) the same card
30. 30.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic chess set
31. 31.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic chess set (c) a bicycle pump (d) a drinking straw
32. 32.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
33. 33.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
34. 34.⚖️ 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) True (b) False
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 same card”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed

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