Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 908 · 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.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a balloon (c) a mirror (d) turmeric powder
4. 4.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a bicycle pump (d) a magnetic pin holder
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) yeast
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
9. 9.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a fridge magnet
10. 10.🧺 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 towel (d) turmeric powder
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a balloon
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
13. 13.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
14. 14.⚖️ 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 measure it (b) we keep it the same (c) we change it
15. 15.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🧺 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
17. 17.True or false: a medicine dropper works by magnetism. (a) False (b) True
18. 18.⚖️ 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 card (c) how full the glass is
19. 19.⚖️ 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) whether the card stays
20. 20.⚖️ 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
21. 21.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
24. 24.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic chess set (d) a drinking straw
25. 25.🔮 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
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 magnet (c) a sink or a bucket (d) a towel
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
28. 28.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ 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 measure it (c) we change it
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) True (b) False
31. 31.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
33. 33.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) a glass of water (d) yeast
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.True or false: a magnetic chess set works by magnetism. (a) True (b) False
37. 37.⚖️ 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 kept the same. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a medicine dropper (d) a vacuum cleaner
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
40. 40.⚖️ 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 glass (b) whether the card stays (c) how full the glass is

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