Air Pressure Experiment Worksheet

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

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