Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 516 · 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 sink or a bucket (b) a magnet (c) a towel (d) a glass of water
2. 2.🧺 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 balloon
3. 3.🧺 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 towel (c) a balloon (d) a glass of water
4. 4.⚖️ 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
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a balloon (d) a mirror
6. 6.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a drinking straw (d) a suction hook
7. 7.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a medicine dropper
8. 8.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) near a plug point (c) on a bed (d) over a laptop
9. 9.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.True or false: a fridge magnet works by magnetism. (a) False (b) True
12. 12.⚖️ 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) the same card (c) whether the card stays (d) the way we turn it
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a magnet (c) a stiff postcard (d) yeast
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
18. 18.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a compass needle (d) a magnetic pin holder
20. 20.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
21. 21.True or false: a compass needle works by magnetism. (a) True (b) False
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a battery cell (d) a mirror
24. 24.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.⚖️ 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 measure it (b) we change it (c) we keep it the same
26. 26.⚖️ 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 measure it (b) we keep it the same (c) we change 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) turmeric powder (c) a stiff postcard (d) a glass of water
28. 28.🔍 Which is the odd one out? (a) a compass needle (b) a bicycle pump (c) a magnetic pin holder (d) a fridge magnet
29. 29.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
30. 30.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
31. 31.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it is heavier (d) it will not break
32. 32.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) air pushes it up (c) juice likes plastic (d) the straw is hot
33. 33.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a fridge magnet
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a stiff postcard (d) a sink or a bucket
36. 36.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
37. 37.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a suction hook
38. 38.🧺 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 mirror (d) a towel
39. 39.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a suction hook (d) a vacuum cleaner

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