Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 887 · 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 card”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.⚖️ 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) whether the card stays (c) the way we turn it (d) how full the glass is
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.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a suction hook
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
7. 7.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a medicine dropper
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) water is hiding there (d) air inside pushes back
9. 9.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.⚖️ 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 glass (c) how full the glass is
11. 11.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a stiff postcard (d) a balloon
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a towel (d) a battery cell
14. 14.⚖️ 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
15. 15.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a magnet (d) a towel
17. 17.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
20. 20.⚖️ 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 change it (b) we measure it (c) we keep it the same
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a towel (d) turmeric powder
22. 22.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.🧺 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 stiff postcard (c) a magnet (d) a towel
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 what we measure. (a) False (b) True
26. 26.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
28. 28.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a drinking straw
30. 30.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a drinking straw (d) a fridge magnet
31. 31.True or false: a fridge magnet works by magnetism. (a) True (b) False
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
33. 33.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic chess set
34. 34.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
35. 35.⚖️ 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 card (b) the same glass (c) the way we turn it (d) whether the card stays
36. 36.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
37. 37.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) a magnet (c) glue on the card (d) the cold water
39. 39.True or false: a suction hook works by magnetism. (a) False (b) True
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a mirror (d) a glass of water

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