Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 837 · 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 needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) turmeric powder (d) a balloon
2. 2.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
3. 3.⚖️ 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
4. 4.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) water is hiding there (d) the bottle is magnetic
5. 5.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🧺 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
7. 7.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
8. 8.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) a magnet (d) a sink or a bucket
11. 11.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.⚖️ 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
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) air (d) water
14. 14.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
15. 15.🧺 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 glass of water (d) a towel
16. 16.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a bicycle pump
17. 17.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a fridge magnet (c) a drinking straw (d) a compass needle
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic pin holder
19. 19.⚖️ 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
20. 20.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
21. 21.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
22. 22.True or false: a drinking straw works by magnetism. (a) False (b) True
23. 23.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.True or false: a magnetic chess set works by magnetism. (a) True (b) False
25. 25.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a drinking straw
26. 26.True or false: a drinking straw works by air pressure. (a) False (b) True
27. 27.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) yeast (d) a stiff postcard
30. 30.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
31. 31.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
32. 32.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a bicycle pump (c) a magnetic pin holder (d) a vacuum cleaner
33. 33.⚖️ 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 card (b) how full the glass is (c) the way we turn it (d) the same glass
34. 34.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
36. 36.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (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 the one thing we change. (a) True (b) False
38. 38.⚖️ 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
39. 39.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a medicine dropper
40. 40.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure

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