Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 93 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a vacuum cleaner (d) a medicine dropper
3. 3.True or false: a drinking straw works by air pressure. (a) True (b) False
4. 4.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
5. 5.⚖️ 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) True (b) False
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a mirror (d) a glass of water
7. 7.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
11. 11.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
12. 12.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
14. 14.⚖️ 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
15. 15.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
16. 16.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
18. 18.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) the card gets wet (d) little air left inside
20. 20.🛟 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
21. 21.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
22. 22.⚖️ 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 the one thing we change. (a) False (b) True
23. 23.⚖️ 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
24. 24.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a vacuum cleaner (d) a fridge magnet
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) whether the card stays (b) the same glass (c) how full the glass is
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a towel (d) a sink or a bucket
28. 28.True or false: a compass needle works by air pressure. (a) False (b) True
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card stays on (d) the card flies away
30. 30.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a suction hook
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a battery cell (d) a stiff postcard
36. 36.⚖️ 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 change it (c) we measure it
37. 37.⚖️ 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) True (b) False
38. 38.⚖️ 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) the same glass (c) whether the card stays (d) how full the glass is
39. 39.True or false: a magnetic chess set works by air pressure. (a) False (b) True
40. 40.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False

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