Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 777 · 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? What do we do with “how full the glass is”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.⚖️ 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) the same card (b) whether the card stays (c) the same glass (d) how full the glass is
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
6. 6.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🧺 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 glass of water (d) a sink or a bucket
9. 9.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a magnetic chess set (d) a compass needle
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) turmeric powder
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.⚖️ 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) True (b) False
13. 13.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
16. 16.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a stiff postcard
20. 20.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
21. 21.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a magnet (d) a towel
29. 29.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
30. 30.🧺 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 glass of water (d) yeast
31. 31.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
33. 33.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
35. 35.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
36. 36.⚖️ 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) False (b) True
37. 37.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a balloon
39. 39.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
40. 40.True or false: a compass needle works by air pressure. (a) False (b) True

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