Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 422 · 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? True or false: whether the card stays is the one thing we change. (a) False (b) True
2. 2.⚖️ 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
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a balloon (d) yeast
10. 10.True or false: a fridge magnet works by magnetism. (a) False (b) True
11. 11.⚖️ 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 measure it (b) we change it (c) we keep it the same
12. 12.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
13. 13.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
18. 18.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
20. 20.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a compass needle (d) a magnetic pin holder
21. 21.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) a mirror
23. 23.True or false: a bicycle pump works by magnetism. (a) False (b) True
24. 24.⚖️ 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 change it (b) we keep it the same (c) we measure it
25. 25.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
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 way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a battery cell
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a towel (d) a stiff postcard
30. 30.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a bicycle pump (d) a medicine dropper
31. 31.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a bicycle pump
32. 32.True or false: a medicine dropper works by air pressure. (a) False (b) True
33. 33.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.⚖️ 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
38. 38.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) glue on the card (d) air pushing up

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