Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 801 · 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 glass”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a sink or a bucket (d) a towel
3. 3.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) turmeric powder (d) a stiff postcard
6. 6.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a bicycle pump (d) a fridge magnet
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a glass of water (d) a sink or a bucket
8. 8.⚖️ 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) the same glass (c) how full the glass is (d) whether the card stays
9. 9.True or false: a drinking straw works by air pressure. (a) True (b) False
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
11. 11.⚖️ 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
12. 12.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
14. 14.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
15. 15.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a towel (c) a sink or a bucket (d) a stiff postcard
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) whether the card stays (b) the same card (c) how full the glass is
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a magnet (d) a battery cell
19. 19.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
20. 20.True or false: a drinking straw works by magnetism. (a) False (b) True
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
23. 23.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a medicine dropper
27. 27.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) the straw is magnetic (d) air pushes it up
28. 28.True or false: a compass needle works by magnetism. (a) False (b) True
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.True or false: a suction hook works by magnetism. (a) True (b) False
31. 31.⚖️ 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 glass (b) how full the glass is (c) whether the card stays
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a mirror (c) a sink or a bucket (d) a glass of water
33. 33.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
35. 35.True or false: a medicine dropper works by magnetism. (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 “whether the card stays”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.⚖️ 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
38. 38.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a compass needle works by air pressure. (a) False (b) True
40. 40.⚖️ 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

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