Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 604 · 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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a balloon (d) a towel
2. 2.⚖️ 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
3. 3.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.⚖️ 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 kept the same. (a) False (b) True
7. 7.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
8. 8.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a mirror (d) yeast
11. 11.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a compass needle (d) a fridge magnet
12. 12.🧺 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 magnet (d) a stiff postcard
13. 13.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a medicine dropper
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a balloon (d) a mirror
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) a mirror (d) a balloon
19. 19.⚖️ 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
20. 20.🧺 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 magnet (d) a glass of water
21. 21.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
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) the same card (b) how full the glass is (c) whether the card stays
23. 23.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) over a sink or bucket (d) near a plug point
24. 24.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
27. 27.🧺 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 glass of water (d) a mirror
28. 28.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a fridge magnet (d) a vacuum cleaner
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) yeast (d) a glass of water
31. 31.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic pin holder (c) a drinking straw (d) a magnetic chess set
32. 32.True or false: a suction hook works by magnetism. (a) True (b) False
33. 33.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.⚖️ 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) False (b) True
35. 35.True or false: a drinking straw works by air pressure. (a) False (b) True
36. 36.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a medicine dropper (c) a suction hook (d) a bicycle pump
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) True (b) False
38. 38.🛟 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
39. 39.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) a battery cell

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