Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 75 · 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.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the glass breaks (d) the card stays on
3. 3.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a medicine dropper (d) a drinking straw
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 same glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
5. 5.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a compass needle
7. 7.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a stiff postcard (d) a magnet
9. 9.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
11. 11.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a magnetic pin holder (d) a medicine dropper
12. 12.True or false: a compass needle works by air pressure. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
14. 14.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.⚖️ 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) the same card (c) how full the glass is
16. 16.True or false: a bicycle pump works by magnetism. (a) True (b) False
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a glass of water (d) a magnet
18. 18.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
20. 20.⚖️ 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
21. 21.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a bicycle pump
22. 22.⚖️ 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
23. 23.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
25. 25.True or false: a medicine dropper works by air pressure. (a) False (b) True
26. 26.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a balloon (d) a towel
28. 28.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.⚖️ 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 measure it (b) we keep it the same (c) we change it
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) a magnet
31. 31.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.True or false: a magnetic chess set works by magnetism. (a) False (b) True
33. 33.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ 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) False (b) True
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
36. 36.⚖️ 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) the way we turn it (d) whether the card stays
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a sink or a bucket (d) a towel
38. 38.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
39. 39.True or false: a magnetic pin holder works by air pressure. (a) False (b) True
40. 40.🔮 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

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