Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 542 · 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) turmeric powder (b) a battery cell (c) a magnet (d) a glass of water
2. 2.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a fridge magnet
3. 3.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a drinking straw (d) a suction hook
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
7. 7.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
8. 8.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a vacuum cleaner (c) a suction hook (d) a compass needle
9. 9.🛟 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
10. 10.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
11. 11.🥛 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
12. 12.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
13. 13.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
15. 15.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.⚖️ 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 what we measure. (a) True (b) False
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there
19. 19.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) near a plug point (c) over a laptop (d) over a sink or bucket
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a mirror (d) a sink or a bucket
22. 22.⚖️ 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
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
24. 24.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
25. 25.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🧺 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 glass of water (d) turmeric powder
28. 28.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
29. 29.⚖️ 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 change it (b) we measure it (c) we keep it the same
30. 30.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
31. 31.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.⚖️ 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
33. 33.True or false: a fridge magnet works by air pressure. (a) True (b) False
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is kept the same? (a) the same card (b) how full the glass is (c) whether the card stays
35. 35.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a magnetic pin holder (d) a drinking straw
37. 37.⚖️ 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
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a mirror (d) a magnet
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed

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