Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 443 · 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 medicine dropper (b) a magnetic pin holder (c) a vacuum cleaner (d) a drinking straw
2. 2.🔍 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 card flies away (c) the glass breaks (d) the card stays on
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a magnet
4. 4.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.True or false: a fridge magnet works by magnetism. (a) True (b) False
6. 6.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) air pushing up (d) the cold water
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) yeast
10. 10.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🥛 Does a magnetic pin holder 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? What do we do with “the same card”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🔮 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
14. 14.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a drinking straw (d) a suction hook
15. 15.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
16. 16.True or false: a suction hook works by air pressure. (a) True (b) False
17. 17.⚖️ 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 measure it (b) we keep it the same (c) we change it
18. 18.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a compass needle (d) a suction hook
19. 19.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to grow plants (d) to catch any spills
22. 22.True or false: a medicine dropper works by air pressure. (a) True (b) False
23. 23.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
25. 25.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a mirror (d) a magnet
27. 27.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
28. 28.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a mirror (d) a glass of water
29. 29.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a magnet (d) a glass of water
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (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: whether the card stays is what we measure. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a drinking straw
37. 37.⚖️ 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 measure it (c) we keep it the same
38. 38.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a sink or a bucket
40. 40.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False

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