Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 434 · 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 is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a drinking straw (d) a fridge magnet
2. 2.⚖️ 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
3. 3.🥤 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
4. 4.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a drinking straw (d) a medicine dropper
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) a sink or a bucket (d) a battery cell
6. 6.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a vacuum cleaner (d) a bicycle pump
8. 8.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🧺 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 sink or a bucket (d) a towel
10. 10.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
12. 12.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
15. 15.⚖️ 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 card (b) whether the card stays (c) how full the glass is (d) the way we turn it
16. 16.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the card stays on (d) the water turns to ice
18. 18.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a glass of water (d) a sink or a bucket
20. 20.🧺 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 towel (d) turmeric powder
21. 21.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a magnet (d) a balloon
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) yeast (d) a stiff postcard
25. 25.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays (d) the same card
26. 26.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
27. 27.True or false: a compass needle works by magnetism. (a) True (b) False
28. 28.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
31. 31.⚖️ 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
32. 32.True or false: a medicine dropper works by magnetism. (a) False (b) True
33. 33.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
35. 35.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a battery cell (d) a stiff postcard
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
39. 39.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
40. 40.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a suction hook (d) a fridge magnet

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