Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 69 · 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 glass”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.⚖️ 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
4. 4.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a balloon (d) a battery cell
6. 6.🛟 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
7. 7.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) air inside pushes back (d) the bottle is magnetic
9. 9.🧺 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) a glass of water (d) a magnet
10. 10.🔍 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 glass breaks (c) the water turns to ice (d) the card flies away
11. 11.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) False (b) True
13. 13.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) yeast (d) turmeric powder
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 glass (b) how full the glass is (c) whether the card stays (d) the same card
16. 16.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
18. 18.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a battery cell
20. 20.⚖️ 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
21. 21.⚖️ 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 change it (c) we keep it the same
22. 22.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
23. 23.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ 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 change it (b) we measure it (c) we keep it the same
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 way we turn it (c) the same card (d) whether the card stays
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
28. 28.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.⚖️ 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) True (b) False
31. 31.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) a magnet (d) the cold water
32. 32.True or false: a drinking straw 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 sink or a bucket (b) a battery cell (c) a glass of water (d) a stiff postcard
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
38. 38.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
40. 40.⚖️ 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) False (b) True

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