Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 408 · 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.True or false: a medicine dropper works by magnetism. (a) False (b) True
2. 2.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a vacuum cleaner
3. 3.🥤 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
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a magnet (d) turmeric powder
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a mirror
6. 6.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
9. 9.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a medicine dropper (d) a vacuum cleaner
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
13. 13.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🥛 Which of these works by air pressure? (a) a drinking straw (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
15. 15.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
16. 16.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
18. 18.True or false: a fridge magnet works by magnetism. (a) True (b) False
19. 19.⚖️ 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) whether the card stays (c) how full the glass is (d) the same card
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a glass of water (d) a mirror
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) turmeric powder
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.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
24. 24.🔮 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) the bottle is magnetic (d) water is hiding there
25. 25.True or false: a bicycle pump works by air pressure. (a) False (b) True
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a mirror (d) a stiff postcard
27. 27.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a compass needle (d) a magnetic pin holder
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
29. 29.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.True or false: a compass needle works by magnetism. (a) True (b) False
31. 31.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a medicine dropper (d) a magnetic chess set
36. 36.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a magnetic pin holder (d) a vacuum cleaner
37. 37.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
38. 38.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) glue on the card (d) a magnet
39. 39.🔍 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
40. 40.True or false: a magnetic chess set works by magnetism. (a) True (b) False

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