Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 585 · 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.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 change it (b) we keep it the same (c) we measure it
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a stiff postcard (d) turmeric powder
4. 4.🔮 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
5. 5.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
8. 8.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
10. 10.True or false: a bicycle pump works by air pressure. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a sink or a bucket (c) a magnet (d) a balloon
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a magnet
13. 13.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
15. 15.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
16. 16.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a suction hook
17. 17.True or false: a bicycle pump works by magnetism. (a) True (b) False
18. 18.⚖️ 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 the one thing we change. (a) False (b) True
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a medicine dropper
20. 20.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a medicine dropper
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a glass of water (c) a magnet (d) yeast
22. 22.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
24. 24.⚖️ 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
25. 25.⚖️ 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 same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
26. 26.⚖️ 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 way we turn it
27. 27.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a magnetic pin holder (d) a fridge magnet
28. 28.True or false: a compass needle works by air pressure. (a) False (b) True
29. 29.⚖️ 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 card
30. 30.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
31. 31.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.True or false: a magnetic chess set works by air pressure. (a) True (b) False
36. 36.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) on a bed (d) over a laptop
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) yeast
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) sand (d) water
40. 40.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True

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