Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 126 · 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 do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to make it rain (d) to catch any spills
2. 2.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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) how full the glass is (c) whether the card stays (d) the same glass
5. 5.True or false: a bicycle pump works by magnetism. (a) True (b) False
6. 6.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a fridge magnet
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a magnet (c) turmeric powder (d) a towel
8. 8.⚖️ 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
9. 9.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a suction hook (d) a bicycle pump
10. 10.True or false: a suction hook works by air pressure. (a) True (b) False
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
12. 12.⚖️ 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 same card
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.⚖️ 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 the one thing we change. (a) False (b) True
15. 15.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🔍 Which is the odd one out? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (d) a medicine dropper
17. 17.⚖️ 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
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.⚖️ 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
21. 21.🛟 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
22. 22.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a magnetic chess set (d) a fridge magnet
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a glass of water (d) a stiff postcard
24. 24.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a towel (d) a glass of water
26. 26.True or false: a medicine dropper works by air pressure. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
33. 33.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a battery cell (d) a mirror
35. 35.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
36. 36.⚖️ 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 what we measure. (a) True (b) False
37. 37.🧺 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 balloon (c) a towel (d) a stiff postcard
38. 38.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure

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