Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 194 · 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 “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
3. 3.🛟 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
4. 4.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a vacuum cleaner (c) a magnetic chess set (d) a fridge magnet
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a vacuum cleaner (d) a compass needle
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a magnet (d) a towel
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🧺 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 sink or a bucket (d) a glass of water
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) yeast (d) turmeric powder
10. 10.🧺 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 stiff postcard (c) a balloon (d) a glass of water
11. 11.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
12. 12.⚖️ 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) the way we turn it (d) whether the card stays
13. 13.⚖️ 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
14. 14.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
15. 15.⚖️ 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
16. 16.⚖️ 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) the same glass (c) how full the glass is
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a sink or a bucket (d) a towel
18. 18.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a balloon (d) a glass of water
28. 28.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a magnetic pin holder (d) a medicine dropper
29. 29.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
31. 31.⚖️ 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) True (b) False
32. 32.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
33. 33.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
35. 35.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays (d) the way we turn it
36. 36.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
37. 37.True or false: a medicine dropper works by air pressure. (a) True (b) False
38. 38.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ 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
40. 40.⚖️ 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

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