Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 141 · 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.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
2. 2.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a towel (d) a battery cell
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a bicycle pump (d) a drinking straw
6. 6.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.True or false: a bicycle pump works by air pressure. (a) True (b) False
8. 8.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.⚖️ 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) how full the glass is (c) whether the card stays (d) the same glass
11. 11.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
13. 13.⚖️ 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
14. 14.⚖️ 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 keep it the same (b) we measure it (c) we change it
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a mirror (d) yeast
16. 16.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a magnetic chess set (d) a drinking straw
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) a magnet
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.⚖️ 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 kept the same. (a) False (b) True
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
22. 22.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a compass needle
24. 24.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a compass needle
28. 28.True or false: a magnetic chess set 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? True or false: the way we turn it is the one thing we change. (a) False (b) True
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a towel
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
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 balloon (c) a sink or a bucket (d) a towel
33. 33.⚖️ 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
34. 34.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a compass needle (d) a magnetic pin holder
36. 36.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
37. 37.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🧺 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 glass of water (c) a magnet (d) a stiff postcard
39. 39.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a medicine dropper
40. 40.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set

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