Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 51 · 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: whether the card stays is the one thing we change. (a) True (b) False
2. 2.⚖️ 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 keep it the same (b) we change it (c) we measure it
3. 3.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a mirror
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a towel
5. 5.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
6. 6.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to catch any spills (d) to make it rain
7. 7.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
8. 8.True or false: a bicycle pump works by air pressure. (a) False (b) True
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
10. 10.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
11. 11.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
12. 12.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
13. 13.🔍 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 card flies away (c) the card stays on (d) the glass breaks
14. 14.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
15. 15.⚖️ 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 way we turn it
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a vacuum cleaner
17. 17.⚖️ 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) how full the glass is (c) the same glass (d) the same card
18. 18.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
19. 19.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
20. 20.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a stiff postcard (d) a mirror
22. 22.⚖️ 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 measure it (c) we change it
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 what we measure. (a) False (b) True
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) True (b) False
25. 25.⚖️ 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
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a stiff postcard (c) a towel (d) a glass of water
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a magnetic chess set
28. 28.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a drinking straw
29. 29.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
30. 30.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a fridge magnet works by magnetism. (a) False (b) True
33. 33.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a glass of water (d) yeast
35. 35.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a vacuum cleaner (c) a medicine dropper (d) a drinking straw
37. 37.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a towel
39. 39.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a medicine dropper
40. 40.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure

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