Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 201 · 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 “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.True or false: a suction hook works by air pressure. (a) True (b) False
4. 4.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic chess set (c) a vacuum cleaner (d) a bicycle pump
6. 6.⚖️ 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) how full the glass is (d) the same glass
7. 7.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
8. 8.⚖️ 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
9. 9.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a medicine dropper (c) a compass needle (d) a magnetic chess set
10. 10.True or false: a suction hook works by magnetism. (a) False (b) True
11. 11.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.⚖️ 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
13. 13.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.⚖️ 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
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is hotter (d) it is heavier
17. 17.⚖️ 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
18. 18.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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 change it (c) we measure it
20. 20.🔮 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 cap is sticky (d) the bottle is magnetic
21. 21.🧺 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 mirror (c) a glass of water (d) a stiff postcard
22. 22.⚖️ 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
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
24. 24.⚖️ 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 same card (c) whether the card stays (d) the same glass
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a stiff postcard (d) a mirror
26. 26.True or false: a magnetic chess set works by air pressure. (a) False (b) True
27. 27.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a compass needle (d) a drinking straw
28. 28.🧺 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 balloon (d) a sink or a bucket
29. 29.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a magnetic chess set
31. 31.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
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 glass”? (a) we change it (b) we measure it (c) we keep it the same
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) turmeric powder (d) a stiff postcard
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a mirror
37. 37.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a fridge magnet
38. 38.True or false: a compass needle works by air pressure. (a) False (b) True
39. 39.🥛 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
40. 40.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a medicine dropper

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