Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 570 · 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? True or false: how full the glass is is the one thing we change. (a) True (b) False
2. 2.True or false: a medicine dropper works by air pressure. (a) True (b) False
3. 3.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a compass needle (d) a fridge magnet
4. 4.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
5. 5.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
6. 6.⚖️ 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
7. 7.⚖️ 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 what we measure. (a) False (b) True
8. 8.True or false: a drinking straw works by air pressure. (a) False (b) True
9. 9.🧺 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 balloon (d) a stiff postcard
10. 10.⚖️ 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 what we measure. (a) True (b) False
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
12. 12.🧺 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) turmeric powder (d) a glass of water
13. 13.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a drinking straw (d) a medicine dropper
15. 15.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
16. 16.⚖️ 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) True (b) False
17. 17.⚖️ 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) how full the glass is (b) whether the card stays (c) the same glass
18. 18.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a towel (d) a glass of water
20. 20.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a mirror (d) a sink or a bucket
22. 22.⚖️ 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) True (b) False
23. 23.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
25. 25.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
26. 26.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a magnetic chess set
27. 27.True or false: a bicycle pump works by magnetism. (a) False (b) True
28. 28.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a towel (d) a glass of water
32. 32.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
33. 33.⚖️ 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 the one thing we change. (a) True (b) False
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
37. 37.⚖️ 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
38. 38.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a vacuum cleaner
39. 39.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
40. 40.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True

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