Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 861 · 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.True or false: a medicine dropper works by magnetism. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a sink or a bucket (d) a glass of water
5. 5.🔮 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
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) turmeric powder
7. 7.⚖️ 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 kept the same. (a) False (b) True
8. 8.⚖️ 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
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
10. 10.⚖️ 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 way we turn it (b) how full the glass is (c) the same glass (d) whether the card stays
11. 11.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
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 card (b) how full the glass is (c) whether the card stays
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) a mirror (d) a glass of water
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
15. 15.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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 measure it (c) we change it
17. 17.⚖️ 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 card (c) whether the card stays (d) the same glass
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
19. 19.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.True or false: a bicycle pump works by air pressure. (a) False (b) True
21. 21.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is hot (d) the straw is magnetic
22. 22.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a fridge magnet
23. 23.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is magnetic (d) it is heavier
24. 24.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
25. 25.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a drinking straw (d) a magnetic chess set
27. 27.⚖️ 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) how full the glass is (c) whether the card stays
28. 28.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
29. 29.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a magnetic chess set (d) a fridge magnet
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic pin holder (c) a drinking straw (d) a suction hook
33. 33.⚖️ 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 keep it the same (b) we measure it (c) we change it
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a towel (d) a stiff postcard
35. 35.🧺 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 mirror (d) a towel
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) a battery cell
37. 37.True or false: yeast is not 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 towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
39. 39.⚖️ 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) False (b) True
40. 40.🧺 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 balloon (d) a glass of water

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