Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 244 · 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 suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a magnetic pin holder
3. 3.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
4. 4.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
5. 5.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a stiff postcard (d) a battery cell
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.True or false: a drinking straw works by air pressure. (a) True (b) False
9. 9.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
12. 12.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a bicycle pump
14. 14.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
17. 17.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
18. 18.⚖️ 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) how full the glass is (b) whether the card stays (c) the same card (d) the way we turn it
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a stiff postcard (d) a glass of water
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
21. 21.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
22. 22.True or false: a bicycle pump works by magnetism. (a) False (b) True
23. 23.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a bicycle pump (d) a compass needle
24. 24.True or false: a drinking straw works by magnetism. (a) True (b) False
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a glass of water
27. 27.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a suction hook
28. 28.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🔮 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
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a vacuum cleaner (d) a compass needle
31. 31.⚖️ 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) True (b) False
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.⚖️ 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 measure it (c) we change it
34. 34.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) yeast (d) a sink or a bucket
36. 36.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) yeast (d) a mirror
39. 39.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism

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