Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 384 · 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? True or false: how full the glass is is what we measure. (a) False (b) True
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) yeast (d) a magnet
3. 3.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a towel
5. 5.🛟 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 magnetic (d) it is hotter
6. 6.⚖️ 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 change it (c) we measure it
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 what we measure. (a) False (b) True
8. 8.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
11. 11.🧺 Do we need a battery cell 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? What do we do with “whether the card stays”? (a) we change it (b) we measure it (c) we keep it the same
13. 13.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a magnetic pin holder
14. 14.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a stiff postcard (d) a towel
17. 17.True or false: a magnetic chess set works by air pressure. (a) False (b) True
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.⚖️ 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) whether the card stays (c) the way we turn it (d) the same glass
22. 22.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
23. 23.⚖️ 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 kept the same. (a) True (b) False
24. 24.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
25. 25.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a stiff postcard (d) a sink or a bucket
27. 27.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
28. 28.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a battery cell (d) a mirror
30. 30.🔍 Which is the odd one out? (a) a magnetic chess set (b) a bicycle pump (c) a vacuum cleaner (d) a medicine dropper
31. 31.⚖️ 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 kept the same. (a) True (b) False
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a towel
33. 33.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
36. 36.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
37. 37.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.⚖️ 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) whether the card stays (c) the same glass
39. 39.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice

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