Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 427 · 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 suction hook (b) a compass needle (c) a medicine dropper (d) a bicycle pump
2. 2.⚖️ 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 card (d) how full the glass is
3. 3.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🧺 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 battery cell (c) a glass of water (d) a towel
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
8. 8.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
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 change it (b) we keep it the same (c) we measure it
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a balloon (d) a magnet
11. 11.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) magnetism (d) air pressure
12. 12.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
13. 13.⚖️ 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
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a mirror (d) a stiff postcard
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a vacuum cleaner (d) a bicycle pump
16. 16.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.⚖️ 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) the same card (c) whether the card stays
19. 19.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a balloon (d) a sink or a bucket
21. 21.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) yeast (d) a stiff postcard
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a battery cell (c) a mirror (d) a sink or a bucket
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a magnet (d) a stiff postcard
26. 26.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a bicycle pump (d) a magnetic chess set
27. 27.⚖️ 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
28. 28.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a battery cell (d) a balloon
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
31. 31.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
33. 33.🧺 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) turmeric powder (d) a towel
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
36. 36.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
38. 38.True or false: a bicycle pump works by magnetism. (a) False (b) True
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) turmeric powder (d) a sink or a bucket
40. 40.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed

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