Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 999 · 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 of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a glass of water (d) a towel
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a towel
3. 3.True or false: a fridge magnet works by magnetism. (a) False (b) True
4. 4.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a magnetic chess set works by magnetism. (a) False (b) True
6. 6.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a suction hook (c) a fridge magnet (d) a compass needle
7. 7.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a suction hook (d) a bicycle pump
8. 8.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a balloon (d) a sink or a bucket
10. 10.True or false: a medicine dropper works by air pressure. (a) True (b) False
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
12. 12.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a suction hook
13. 13.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
14. 14.True or false: a bicycle pump works by air pressure. (a) True (b) False
15. 15.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a fridge magnet (d) a magnetic chess set
16. 16.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a compass needle (d) a drinking straw
17. 17.⚖️ 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
18. 18.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
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 same card”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🧺 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 battery cell (d) a towel
21. 21.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.⚖️ 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 way we turn it (b) the same card (c) the same glass (d) whether the card stays
23. 23.⚖️ 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) False (b) True
24. 24.🛟 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
25. 25.🛟 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
26. 26.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
27. 27.⚖️ 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) False (b) True
28. 28.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
31. 31.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) the straw is hot (d) juice likes plastic
34. 34.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic chess set
36. 36.⚖️ 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
37. 37.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card stays on (c) the card flies away (d) the water turns to ice
38. 38.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a bicycle pump
39. 39.⚖️ 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 measure it (b) we change it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set

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