Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 665 · 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.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.⚖️ 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
3. 3.⚖️ 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 keep it the same (c) we change it
4. 4.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
7. 7.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 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 mirror (d) a sink or a bucket
11. 11.⚖️ 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) the same glass (c) whether the card stays (d) how full the glass is
12. 12.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a medicine dropper (d) a vacuum cleaner
13. 13.⚖️ 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 keep it the same (b) we measure it (c) we change it
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a vacuum cleaner (d) a suction hook
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) yeast (d) a battery cell
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a sink or a bucket
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a stiff postcard (d) a magnet
20. 20.True or false: a magnetic chess set works by magnetism. (a) False (b) True
21. 21.True or false: a fridge magnet works by air pressure. (a) False (b) True
22. 22.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
23. 23.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
24. 24.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.⚖️ 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 change it (c) we measure it
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a towel
27. 27.⚖️ 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
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a magnet
29. 29.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.True or false: a bicycle pump works by air pressure. (a) False (b) True
31. 31.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
32. 32.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) turmeric powder
34. 34.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the way we turn it
36. 36.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a vacuum cleaner (d) a compass needle
39. 39.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants

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