Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 86 · 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.⚖️ 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) the way we turn it (c) whether the card stays (d) how full the glass is
2. 2.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) yeast (d) a stiff postcard
5. 5.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
6. 6.⚖️ 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 card (b) whether the card stays (c) how full the glass is (d) the same glass
7. 7.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) air pushes it up (c) the straw is hot (d) the straw is magnetic
8. 8.🧺 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) a sink or a bucket (d) turmeric powder
9. 9.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.⚖️ 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) True (b) False
12. 12.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
13. 13.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) on a bed (d) over a sink or bucket
14. 14.🧺 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 magnet
15. 15.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
17. 17.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) a compass needle (b) a suction hook (c) a magnetic pin holder (d) a fridge magnet
19. 19.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a magnetic pin holder (d) a compass needle
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a stiff postcard (d) a sink or a bucket
22. 22.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the cap is sticky (d) the bottle is magnetic
24. 24.True or false: a medicine dropper works by magnetism. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a drinking straw (d) a bicycle pump
26. 26.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we keep it the same (b) we change it (c) we measure it
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 balloon (c) a stiff postcard (d) a glass of water
28. 28.True or false: a medicine dropper works by air pressure. (a) False (b) True
29. 29.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a battery cell
30. 30.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
31. 31.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a compass needle (d) a bicycle pump
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a vacuum cleaner (d) a drinking straw
35. 35.🔍 Which is the odd one out? (a) a bicycle pump (b) a drinking straw (c) a compass needle (d) a suction hook
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a battery cell (d) a balloon
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a towel (d) a stiff postcard
38. 38.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a drinking straw (c) a vacuum cleaner (d) a bicycle pump
39. 39.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.True or false: a drinking straw works by magnetism. (a) True (b) False

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