Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 419 · 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.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the cap is sticky (d) the bottle is magnetic
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a compass needle (c) a suction hook (d) a vacuum cleaner
4. 4.⚖️ 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
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 towel (c) a sink or a bucket (d) turmeric powder
7. 7.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.🛟 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
9. 9.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔍 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 flies away (d) the card stays on
12. 12.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) sand (d) smoke
13. 13.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
14. 14.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
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 change it (b) we measure it (c) we keep it the same
16. 16.⚖️ 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
17. 17.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
20. 20.⚖️ 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
21. 21.🧺 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 towel (c) a glass of water (d) a magnet
22. 22.🧺 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 glass of water (d) a balloon
23. 23.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
26. 26.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a fridge magnet
28. 28.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
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) how full the glass is (b) whether the card stays (c) the same glass
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 the one thing we change. (a) False (b) True
32. 32.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a suction hook (d) a magnetic chess set
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a towel
34. 34.🥛 Which of these works by magnetism? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a medicine dropper
35. 35.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
37. 37.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
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 same glass (b) how full the glass is (c) the same card (d) the way we turn it
39. 39.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a bicycle pump

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