Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 824 · 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: whether the card stays is what we measure. (a) True (b) False
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a towel (d) yeast
3. 3.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a sink or a bucket (d) a mirror
6. 6.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a magnetic pin holder (d) a fridge magnet
7. 7.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a stiff postcard (d) a balloon
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) turmeric powder
10. 10.⚖️ 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 keep it the same (b) we change it (c) we measure it
11. 11.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a towel (d) a stiff postcard
16. 16.⚖️ 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
17. 17.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
19. 19.⚖️ 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
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.True or false: a medicine dropper works by magnetism. (a) True (b) False
22. 22.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a battery cell (d) a glass of water
25. 25.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
26. 26.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a magnetic chess set
27. 27.🔍 Which is the odd one out? (a) a magnetic pin holder (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? True or false: the same glass is kept the same. (a) False (b) True
29. 29.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.⚖️ 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
31. 31.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a sink or a bucket
33. 33.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
34. 34.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
35. 35.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a fridge magnet
38. 38.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ 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
40. 40.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder

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