Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 488 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a suction hook (d) a magnetic chess set
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a mirror (d) a stiff postcard
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
8. 8.⚖️ 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) whether the card stays (b) the same card (c) the same glass (d) how full the glass is
9. 9.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.⚖️ 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
11. 11.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.⚖️ 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 measure it (b) we change it (c) we keep it the same
13. 13.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a mirror (d) a balloon
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 measure it (c) we keep it the same
17. 17.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
21. 21.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 card”? (a) we measure it (b) we change it (c) we keep it the same
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a mirror
25. 25.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
27. 27.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a towel (d) a sink or a bucket
28. 28.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
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) whether the card stays (b) the same card (c) the same glass (d) how full the glass is
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) turmeric powder (d) a towel
31. 31.⚖️ 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
32. 32.🧺 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 glass of water (c) a balloon (d) a towel
33. 33.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🛟 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
35. 35.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
38. 38.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.⚖️ 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

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