Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 151 · 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 works by magnetism? (a) a magnetic chess set (b) a medicine dropper (c) a suction hook (d) a bicycle pump
2. 2.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (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: whether the card stays is what we measure. (a) False (b) True
4. 4.🛟 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
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
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 measure it (b) we change it (c) we keep it the same
7. 7.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
8. 8.True or false: a suction hook works by magnetism. (a) True (b) False
9. 9.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
11. 11.⚖️ 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) how full the glass is (b) the same glass (c) the same card (d) whether the card stays
12. 12.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.⚖️ 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) False (b) True
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 the one thing we change. (a) True (b) False
18. 18.True or false: a suction hook works by air pressure. (a) True (b) False
19. 19.⚖️ 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) True (b) False
20. 20.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
21. 21.⚖️ 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) False (b) True
22. 22.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
23. 23.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) it looks nicer (c) water is heavier (d) the card gets wet
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a towel (c) a mirror (d) a battery cell
25. 25.⚖️ 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) True (b) False
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.True or false: a bicycle pump works by air pressure. (a) False (b) True
28. 28.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a towel
32. 32.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a medicine dropper
33. 33.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🧺 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 glass of water (c) a balloon (d) a stiff postcard
38. 38.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a fridge magnet
40. 40.🧺 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 battery cell (d) a sink or a bucket

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