Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 766 · 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 suction hook (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
2. 2.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a magnetic chess set
3. 3.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.True or false: a drinking straw works by magnetism. (a) True (b) False
12. 12.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
13. 13.⚖️ 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) the way we turn it (b) the same card (c) whether the card stays (d) how full the glass is
14. 14.🔍 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
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
16. 16.⚖️ 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) False (b) True
17. 17.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.True or false: a fridge magnet works by magnetism. (a) False (b) True
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
20. 20.⚖️ 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) False (b) True
21. 21.True or false: a fridge magnet works by air pressure. (a) False (b) True
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a magnet
23. 23.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) little air left inside (c) it looks nicer (d) the card gets wet
24. 24.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
26. 26.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays
27. 27.⚖️ 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
28. 28.🧺 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 glass of water (c) a towel (d) turmeric powder
29. 29.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a towel
31. 31.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) yeast (d) a stiff postcard
34. 34.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
35. 35.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: whether the card stays is what we measure. (a) False (b) True
37. 37.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.True or false: a suction hook works by magnetism. (a) False (b) True
39. 39.⚖️ 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
40. 40.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False

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