Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 714 · 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? What do we do with “the same card”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🧺 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 stiff postcard (c) a glass of water (d) a mirror
3. 3.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
6. 6.⚖️ 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
7. 7.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a magnetic chess set (d) a compass needle
8. 8.⚖️ 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
9. 9.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
12. 12.⚖️ 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
13. 13.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
14. 14.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a medicine dropper
15. 15.True or false: a suction hook works by air pressure. (a) True (b) False
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a mirror (d) a towel
17. 17.⚖️ 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) the way we turn it (b) how full the glass is (c) whether the card stays
18. 18.⚖️ 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 glass (c) whether the card stays
19. 19.True or false: a mirror 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) turmeric powder (b) a glass of water (c) yeast (d) a balloon
21. 21.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
22. 22.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
23. 23.🔮 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) air inside pushes back (d) the cap is sticky
24. 24.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) yeast
26. 26.🧺 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 balloon (d) a towel
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
28. 28.🧺 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 sink or a bucket (d) a stiff postcard
29. 29.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.⚖️ 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
32. 32.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a drinking straw
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a suction hook
38. 38.⚖️ 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 way we turn it (b) whether the card stays (c) the same glass (d) the same card
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
40. 40.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a bicycle pump

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