Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 123 · 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 balloon is needed for the card-on-a-glass trick. (a) True (b) False
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a magnet (d) a battery cell
4. 4.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the way we turn it”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic chess set (c) a vacuum cleaner (d) a drinking straw
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) air pushing up (c) the cold water (d) a magnet
8. 8.⚖️ 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
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
10. 10.⚖️ 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) True (b) False
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to cool the glass (c) to catch any spills (d) to make it rain
12. 12.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a glass of water
14. 14.⚖️ 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) False (b) True
15. 15.True or false: a drinking straw works by air pressure. (a) False (b) True
16. 16.⚖️ 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 glass (b) whether the card stays (c) how full the glass is (d) the way we turn it
17. 17.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
18. 18.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a bicycle pump
20. 20.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a towel
23. 23.🔍 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 glass breaks (c) the card stays on (d) the card flies away
24. 24.🧺 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 balloon (c) a stiff postcard (d) a glass of water
25. 25.⚖️ 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 same glass (b) how full the glass is (c) the way we turn it (d) whether the card stays
26. 26.⚖️ 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) whether the card stays (b) the same glass (c) how full the glass is
27. 27.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a medicine dropper
28. 28.True or false: a drinking straw works by magnetism. (a) True (b) False
29. 29.True or false: a bicycle pump works by magnetism. (a) False (b) True
30. 30.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a magnetic chess set
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
33. 33.🔍 Which is the odd one out? (a) a magnetic chess set (b) a medicine dropper (c) a vacuum cleaner (d) a bicycle pump
34. 34.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a battery cell (d) a sink or a bucket

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