Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 277 · 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.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
2. 2.🧺 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 towel (c) a balloon (d) a stiff postcard
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a stiff postcard (d) yeast
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a towel
5. 5.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.True or false: a compass needle works by magnetism. (a) False (b) True
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
10. 10.True or false: a medicine dropper works by magnetism. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
13. 13.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) turmeric powder (d) a glass of water
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a magnetic pin holder
17. 17.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
18. 18.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) turmeric powder (d) a sink or a bucket
23. 23.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a suction hook (d) a magnetic pin holder
25. 25.🔮 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) air inside pushes back (d) the bottle is magnetic
26. 26.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a drinking straw (c) a medicine dropper (d) a suction hook
28. 28.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a magnetic pin holder (d) a fridge magnet
29. 29.🧺 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 glass of water (d) a stiff postcard
30. 30.⚖️ 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
31. 31.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.⚖️ 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) how full the glass is (c) the same card
34. 34.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.⚖️ 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 glass (c) the same card (d) the way we turn it
37. 37.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.⚖️ 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
39. 39.⚖️ 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) False (b) True
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure

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