Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 876 · 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.🔍 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 card flies away (c) the glass breaks (d) the water turns to ice
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
4. 4.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
5. 5.🧺 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) yeast (d) a sink or a bucket
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
7. 7.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a battery cell (c) a sink or a bucket (d) turmeric powder
9. 9.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
11. 11.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to cool the glass (d) to make it rain
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a magnet
13. 13.True or false: a suction hook works by magnetism. (a) False (b) True
14. 14.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
15. 15.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a balloon (c) yeast (d) a towel
17. 17.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
18. 18.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a compass needle (d) a vacuum cleaner
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 what we measure. (a) True (b) False
20. 20.⚖️ 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 card (b) how full the glass is (c) the way we turn it (d) whether the card stays
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.⚖️ 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 card (c) how full the glass is
23. 23.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a medicine dropper (d) a vacuum cleaner
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a drinking straw (d) a fridge magnet
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a stiff postcard (d) a balloon
26. 26.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a suction hook
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a stiff postcard (d) a battery cell
28. 28.⚖️ 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
29. 29.⚖️ 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
30. 30.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
32. 32.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) juice likes plastic (c) the straw is magnetic (d) the straw is hot
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) air (d) smoke
35. 35.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a fridge magnet (d) a vacuum cleaner
36. 36.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a magnetic pin holder
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.True or false: a bicycle pump works by air pressure. (a) True (b) False
39. 39.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
40. 40.⚖️ 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

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