Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 87 · 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.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
2. 2.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.⚖️ 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) True (b) False
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 towel (c) a sink or a bucket (d) a stiff postcard
5. 5.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a towel (c) a stiff postcard (d) a glass of water
8. 8.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a suction hook (d) a vacuum cleaner
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
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 glass”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a magnetic pin holder
12. 12.🧺 Do we need a balloon 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? What do we do with “the way we turn it”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a magnet (d) a towel
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
17. 17.⚖️ 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
18. 18.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.⚖️ 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 what we measure. (a) False (b) True
20. 20.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
21. 21.True or false: a drinking straw works by air pressure. (a) False (b) True
22. 22.🧺 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 magnet (c) a glass of water (d) a towel
23. 23.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a magnetic chess set
24. 24.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner
25. 25.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a vacuum cleaner (d) a magnetic pin holder
26. 26.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ 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
28. 28.🧺 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 stiff postcard (c) a glass of water (d) yeast
29. 29.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a drinking straw (d) a bicycle pump
32. 32.🧺 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) turmeric powder (d) a stiff postcard
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) a sink or a bucket (d) a balloon
34. 34.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🛟 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
37. 37.⚖️ 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 way we turn it
38. 38.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a medicine dropper (d) a suction hook
39. 39.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a fridge magnet
40. 40.True or false: a fridge magnet works by air pressure. (a) True (b) False

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