Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 750 · 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.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
2. 2.⚖️ 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 kept the same. (a) True (b) False
3. 3.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🧺 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 battery cell (d) a glass of water
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.⚖️ 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) how full the glass is (c) the way we turn it (d) the same glass
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
10. 10.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
11. 11.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the card stays on (d) the glass breaks
13. 13.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
15. 15.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.⚖️ 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 glass (b) how full the glass is (c) the same card (d) whether the card stays
17. 17.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
18. 18.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a drinking straw (d) a medicine dropper
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) a balloon
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a balloon (d) turmeric powder
22. 22.True or false: a compass needle works by air pressure. (a) False (b) True
23. 23.⚖️ 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
24. 24.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a magnet (d) yeast
26. 26.True or false: a suction hook works by magnetism. (a) False (b) True
27. 27.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
28. 28.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
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 kept the same. (a) True (b) False
30. 30.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
32. 32.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.🧺 Do we need a battery cell 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? What do we do with “how full the glass is”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a medicine dropper (d) a magnetic pin holder
37. 37.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a glass of water (d) a towel
40. 40.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a medicine dropper (c) a vacuum cleaner (d) a drinking straw

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