Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 748 · 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? Which of these is the one thing we change? (a) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a sink or a bucket (d) a battery cell
3. 3.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
4. 4.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) water is heavier (d) little air left inside
5. 5.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.True or false: a compass needle works by air pressure. (a) False (b) True
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the way we turn it is the one thing we change. (a) False (b) True
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.True or false: a magnetic chess set works by air pressure. (a) True (b) False
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a medicine dropper (d) a magnetic chess set
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a balloon (d) a mirror
14. 14.⚖️ 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
15. 15.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) yeast (c) a stiff postcard (d) a towel
17. 17.🔍 Which is the odd one out? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a vacuum cleaner
18. 18.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the water turns to ice (c) the glass breaks (d) the card stays on
19. 19.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a vacuum cleaner
21. 21.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
22. 22.🧺 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) a battery cell
23. 23.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a glass of water (d) a magnet
25. 25.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a fridge magnet (d) a bicycle pump
27. 27.⚖️ 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
28. 28.🔮 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) the bottle is magnetic (d) air inside pushes back
29. 29.⚖️ 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 card
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a towel
31. 31.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
32. 32.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
33. 33.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.⚖️ 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
35. 35.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) air pressure (d) magnetism
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 balloon (c) a sink or a bucket (d) a towel
37. 37.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a drinking straw works by magnetism. (a) True (b) False
39. 39.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure

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