Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 889 · 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 fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a towel
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a glass of water (d) a sink or a bucket
4. 4.⚖️ 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
5. 5.True or false: a compass needle works by magnetism. (a) False (b) True
6. 6.True or false: a drinking straw works by magnetism. (a) True (b) False
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) turmeric powder (d) a mirror
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (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) turmeric powder (c) a towel (d) a sink or a bucket
10. 10.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
11. 11.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a glass of water (d) a sink or a bucket
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a balloon
20. 20.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
21. 21.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a vacuum cleaner (d) a medicine dropper
22. 22.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🔮 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
25. 25.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
28. 28.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
29. 29.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
31. 31.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a mirror
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a battery cell (d) a glass of water
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a glass of water (d) a towel
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
38. 38.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
40. 40.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed

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