Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 459 · 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.🛟 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
2. 2.⚖️ 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 change it (c) we measure it
3. 3.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.True or false: a drinking straw works by air pressure. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a suction hook (d) a compass needle
7. 7.⚖️ 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 change it (c) we measure it
8. 8.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ 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
10. 10.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔮 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) water is hiding there (d) air inside pushes back
12. 12.⚖️ 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) the way we turn it (c) how full the glass is (d) the same card
13. 13.🥤 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
14. 14.True or false: a drinking straw works by magnetism. (a) False (b) True
15. 15.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) yeast (d) a balloon
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
18. 18.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a compass needle (d) a medicine dropper
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
21. 21.True or false: a magnetic chess set works by magnetism. (a) False (b) True
22. 22.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
23. 23.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
25. 25.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) over a sink or bucket (d) on a bed
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
30. 30.⚖️ 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) False (b) True
31. 31.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.True or false: a magnet is needed for the card-on-a-glass trick. (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 battery cell (b) a glass of water (c) a towel (d) a sink or a bucket
34. 34.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a vacuum cleaner (d) a fridge magnet
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a magnet (d) a glass of water
37. 37.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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) whether the card stays (c) how full the glass is
39. 39.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a battery cell (d) yeast

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