Air Pressure Experiment Worksheet

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

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