Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 664 · 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 squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) the bottle is magnetic (d) air inside pushes back
2. 2.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
3. 3.⚖️ 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 change it (b) we measure it (c) we keep it the same
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a glass of water (d) a balloon
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) yeast
8. 8.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a towel (d) a magnet
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a battery cell (d) a mirror
12. 12.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: a suction hook works by magnetism. (a) True (b) False
14. 14.⚖️ 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 same card
15. 15.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
16. 16.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a fridge magnet
19. 19.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
20. 20.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 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 stiff postcard
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a towel (d) a stiff postcard
23. 23.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
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 keep it the same (c) we change it
26. 26.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a suction hook (d) a vacuum cleaner
27. 27.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) sand (d) air
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
31. 31.🔍 Which is the odd one out? (a) a fridge magnet (b) a medicine dropper (c) a suction hook (d) a drinking straw
32. 32.True or false: a suction hook works by air pressure. (a) True (b) False
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a towel (d) a glass of water
34. 34.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a magnetic pin holder (d) a drinking straw
35. 35.⚖️ 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
36. 36.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a medicine dropper
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a stiff postcard (d) turmeric powder
38. 38.⚖️ 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) the same card (c) how full the glass is (d) whether the card stays
39. 39.True or false: a fridge magnet works by air pressure. (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) how full the glass is (b) the same glass (c) whether the card stays

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