Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 144 · 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.True or false: a bicycle pump works by magnetism. (a) False (b) True
2. 2.⚖️ 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 kept the same. (a) False (b) True
3. 3.📘 Air presses on everything around us. What is this push called? (a) friction (b) air pressure (c) sunlight (d) magnetism
4. 4.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a glass of water (d) yeast
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 keep it the same (c) we measure it
8. 8.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a battery cell (d) turmeric powder
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.🧺 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 towel (c) a glass of water (d) turmeric powder
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a sink or a bucket
17. 17.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a compass needle
18. 18.🧺 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 mirror (d) a towel
19. 19.⚖️ 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 same card (b) how full the glass is (c) whether the card stays
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a compass needle
23. 23.⚖️ 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 what we measure. (a) True (b) False
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a balloon
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
26. 26.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
28. 28.🔮 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) water is hiding there (d) the bottle is magnetic
29. 29.🥛 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
30. 30.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) a towel (d) a sink or a bucket
33. 33.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a drinking straw (d) a magnetic pin holder
34. 34.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
36. 36.⚖️ 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) False (b) True
37. 37.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.⚖️ 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
39. 39.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
40. 40.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is magnetic (d) the straw is hot

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