Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 385 · 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) True (b) False
2. 2.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
4. 4.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a balloon (d) turmeric powder
6. 6.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.⚖️ 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) whether the card stays
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a bicycle pump
9. 9.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to catch any spills (d) to cool the glass
10. 10.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a mirror
12. 12.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the water turns to ice (d) the glass breaks
13. 13.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a fridge magnet
15. 15.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a magnetic chess set
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
18. 18.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
19. 19.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we change it (b) we measure it (c) we keep it the same
20. 20.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
22. 22.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a magnet (d) turmeric powder
24. 24.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.⚖️ 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) the same card (c) whether the card stays
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change it
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a vacuum cleaner (d) a suction hook
28. 28.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
29. 29.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
30. 30.🧺 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) a magnet
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) a towel (d) turmeric powder
32. 32.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
33. 33.🧺 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 glass of water (c) a towel (d) yeast
34. 34.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) yeast
36. 36.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic pin holder (d) a bicycle pump
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.🧺 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 towel (d) a sink or a bucket
39. 39.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a stiff postcard (d) turmeric powder

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