Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 744 · 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? What do we do with “the same card”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
3. 3.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a suction hook (d) a medicine dropper
4. 4.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a compass needle
5. 5.True or false: a drinking straw works by magnetism. (a) True (b) False
6. 6.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
7. 7.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
8. 8.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
9. 9.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) a towel (d) a stiff postcard
12. 12.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a drinking straw (d) a medicine dropper
15. 15.⚖️ 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) the way we turn it (c) the same card (d) the same glass
16. 16.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.⚖️ 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
18. 18.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
19. 19.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 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 stays on (c) the card flies away (d) the glass breaks
21. 21.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
22. 22.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a magnetic pin holder (d) a compass needle
24. 24.⚖️ 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) False (b) True
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a towel (d) a mirror
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
27. 27.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
28. 28.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.True or false: a fridge magnet works by air pressure. (a) False (b) True
30. 30.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.True or false: a stiff postcard is needed for the card-on-a-glass trick. (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 sink or a bucket (b) a magnet (c) a towel (d) a stiff postcard
33. 33.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a towel (c) a glass of water (d) a sink or a bucket
35. 35.True or false: a magnetic chess set works by air pressure. (a) False (b) True
36. 36.True or false: a bicycle pump works by magnetism. (a) False (b) True
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 kept the same. (a) False (b) True
38. 38.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
39. 39.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
40. 40.⚖️ 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

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