Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 73 · 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.🔮 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 catch any spills (d) to grow plants
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a medicine dropper
4. 4.🛟 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
5. 5.⚖️ 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) True (b) False
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) how full the glass is (c) whether the card stays (d) the same glass
7. 7.⚖️ 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 change it (b) we keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a stiff postcard (d) a mirror
12. 12.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic pin holder (d) a medicine dropper
15. 15.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
16. 16.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a compass needle (d) a magnetic pin holder
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a towel (d) a glass of water
19. 19.True or false: a suction hook works by air pressure. (a) False (b) True
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.⚖️ 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 same glass
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a towel (d) a glass of water
24. 24.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is hot (d) the straw is magnetic
25. 25.🧺 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) a balloon (d) a stiff postcard
26. 26.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
27. 27.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
28. 28.⚖️ 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) the way we turn it (b) whether the card stays (c) the same glass (d) the same card
29. 29.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a magnet (d) a glass of water
30. 30.⚖️ 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) False (b) True
31. 31.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
32. 32.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🥛 Which of these works by magnetism? (a) a compass needle (b) a vacuum cleaner (c) a drinking straw (d) a suction hook
34. 34.True or false: a fridge magnet works by magnetism. (a) True (b) False
35. 35.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
39. 39.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False

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