Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 716 · 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.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) turmeric powder (d) a magnet
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.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a battery cell
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a mirror (d) a towel
11. 11.⚖️ 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) the same card (d) whether the card stays
12. 12.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a compass needle (d) a drinking straw
16. 16.⚖️ 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) whether the card stays (b) the same card (c) the same glass (d) the way we turn it
17. 17.⚖️ 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
18. 18.🔮 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
19. 19.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.⚖️ 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
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) turmeric powder
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 measure it (b) we keep it the same (c) we change it
25. 25.⚖️ 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) how full the glass is (c) the same glass
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
27. 27.🧺 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 towel (c) a stiff postcard (d) yeast
28. 28.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
29. 29.⚖️ 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) True (b) False
30. 30.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
32. 32.🛟 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
33. 33.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a compass needle (d) a vacuum cleaner
34. 34.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.True or false: a medicine dropper works by air pressure. (a) False (b) True
37. 37.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a fridge magnet (d) a suction hook
39. 39.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a fridge magnet (d) a compass needle
40. 40.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed

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