Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 758 · 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 is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a bicycle pump
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a stiff postcard
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a stiff postcard
5. 5.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a suction hook
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water
7. 7.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a mirror (d) a glass of water
10. 10.⚖️ 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) True (b) False
11. 11.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 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 battery cell (d) a stiff postcard
13. 13.True or false: a magnetic chess set works by magnetism. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
15. 15.⚖️ 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
16. 16.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
18. 18.🛟 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
19. 19.🧺 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
20. 20.True or false: a suction hook works by magnetism. (a) False (b) True
21. 21.🔮 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
22. 22.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.True or false: a magnetic chess set works by air pressure. (a) False (b) True
24. 24.True or false: a drinking straw works by magnetism. (a) False (b) True
25. 25.⚖️ 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
26. 26.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
27. 27.⚖️ 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 way we turn it (c) how full the glass is (d) whether the card stays
28. 28.⚖️ 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) whether the card stays (c) the same card
29. 29.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
30. 30.🧺 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 stiff postcard (d) yeast
31. 31.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.⚖️ 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 keep it the same (c) we change it
33. 33.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a bicycle pump (c) a vacuum cleaner (d) a drinking straw
34. 34.🧺 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 mirror
35. 35.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
38. 38.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure

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