Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 26 · 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
2. 2.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a drinking straw (d) a fridge magnet
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a magnet
4. 4.⚖️ 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) True (b) False
5. 5.🛟 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
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a medicine dropper (d) a bicycle pump
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a sink or a bucket (d) a stiff postcard
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a glass of water (d) a sink or a bucket
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a glass of water
10. 10.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.⚖️ 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) True (b) False
12. 12.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) magnetism (d) sunlight
13. 13.True or false: a suction hook works by air pressure. (a) False (b) True
14. 14.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.True or false: a drinking straw works by magnetism. (a) True (b) False
16. 16.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
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 measure it (b) we keep it the same (c) we change it
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a mirror (d) a sink or a bucket
19. 19.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a battery cell (d) a mirror
20. 20.True or false: a bicycle pump works by magnetism. (a) False (b) True
21. 21.🔍 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 glass breaks (c) the card flies away (d) the card stays on
22. 22.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a suction hook (d) a magnetic pin holder
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a balloon (d) a mirror
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
30. 30.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a suction hook (d) a bicycle pump
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a balloon (d) a sink or a bucket
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.⚖️ 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
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
38. 38.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a compass needle works by magnetism. (a) True (b) False
40. 40.⚖️ 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 way we turn it

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