Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 233 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) a battery cell
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) whether the card stays (b) the way we turn it (c) the same glass (d) the same card
3. 3.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
4. 4.⚖️ 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
5. 5.⚖️ 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 glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
6. 6.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
7. 7.🧺 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 mirror (d) a stiff postcard
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🧺 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 stiff postcard (d) a balloon
11. 11.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
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 the one thing we change. (a) True (b) False
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
14. 14.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
15. 15.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
16. 16.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.True or false: a compass needle works by magnetism. (a) False (b) True
18. 18.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) yeast (d) turmeric powder
21. 21.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a fridge magnet (d) a magnetic pin holder
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
23. 23.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a towel (c) a glass of water (d) a stiff postcard
27. 27.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a drinking straw (d) a medicine dropper
28. 28.True or false: a medicine dropper works by magnetism. (a) True (b) False
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a suction hook (d) a magnetic pin holder
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a magnet (d) turmeric powder
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a stiff postcard
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a battery cell (d) a stiff postcard
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) yeast (d) a stiff postcard
35. 35.True or false: a magnetic chess set works by air pressure. (a) True (b) False
36. 36.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
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 measure it (b) we keep it the same (c) we change it
38. 38.True or false: a drinking straw works by air pressure. (a) False (b) True
39. 39.⚖️ 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 what we measure. (a) True (b) False
40. 40.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True

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