Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 238 · 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.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a bicycle pump (d) a suction hook
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) over a laptop (d) on a bed
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) True (b) False
5. 5.True or false: a suction hook works by magnetism. (a) True (b) False
6. 6.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ 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
9. 9.🥤 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
10. 10.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a bicycle pump
12. 12.True or false: a magnetic chess set works by air pressure. (a) False (b) True
13. 13.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) yeast (d) a glass of water
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a magnetic pin holder (d) a vacuum cleaner
16. 16.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
17. 17.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
20. 20.🧺 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 balloon (d) a glass of water
21. 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
22. 22.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
24. 24.⚖️ 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
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a sink or a bucket (d) a stiff postcard
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a balloon (d) yeast
27. 27.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
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.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.⚖️ 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
31. 31.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) whether the card stays
32. 32.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
33. 33.⚖️ 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) True (b) False
34. 34.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a glass of water
36. 36.⚖️ 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
37. 37.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 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
39. 39.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner

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