Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 386 · 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 glass of water for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.⚖️ 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 keep it the same (c) we change it
3. 3.⚖️ 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 measure it (b) we change it (c) we keep it the same
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a balloon (d) a stiff postcard
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a mirror (d) a sink or a bucket
8. 8.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
10. 10.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a compass needle
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
12. 12.🧺 Do we need a mirror 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? True or false: the way we turn it is kept the same. (a) False (b) True
14. 14.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
16. 16.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.⚖️ 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) the same glass (c) how full the glass is (d) the way we turn it
18. 18.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.⚖️ 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) the way we turn it (b) whether the card stays (c) how full the glass is
21. 21.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a bicycle pump (c) a fridge magnet (d) a compass needle
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a glass of water (d) a magnet
24. 24.⚖️ 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
25. 25.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
26. 26.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
28. 28.🥛 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
29. 29.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a compass needle (d) a drinking straw
30. 30.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) whether the card stays
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a battery cell (d) a stiff postcard
32. 32.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a magnet
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (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? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
37. 37.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the water turns to ice (d) the card flies away
38. 38.True or false: a bicycle pump works by magnetism. (a) False (b) True
39. 39.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 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 towel

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