Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 453 · 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 same card”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass (d) the way we turn it
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a glass of water
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) water (d) air
7. 7.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ 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 card (b) whether the card stays (c) the way we turn it (d) the same glass
9. 9.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.⚖️ 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
11. 11.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a bicycle pump (d) a magnetic pin holder
13. 13.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a drinking straw (d) a bicycle pump
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
17. 17.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a bicycle pump works by air pressure. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a compass needle
21. 21.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
22. 22.True or false: a medicine dropper works by magnetism. (a) False (b) True
23. 23.True or false: a magnetic chess set works by air pressure. (a) True (b) False
24. 24.⚖️ 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
25. 25.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a compass needle
28. 28.True or false: a drinking straw works by magnetism. (a) False (b) True
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a towel (d) turmeric powder
30. 30.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a glass of water (c) a stiff postcard (d) a towel
32. 32.🧺 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) a magnet
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.True or false: a bicycle pump works by magnetism. (a) True (b) False
36. 36.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
39. 39.⚖️ 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) False (b) True
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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