Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 588 · 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) yeast (b) a sink or a bucket (c) a towel (d) a glass of water
2. 2.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a suction hook (d) a bicycle pump
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a towel
4. 4.True or false: a drinking straw works by magnetism. (a) True (b) False
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the card stays on (d) the water turns to ice
7. 7.True or false: a bicycle pump works by magnetism. (a) False (b) True
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
9. 9.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
10. 10.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
13. 13.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.⚖️ 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 same glass (d) whether the card stays
15. 15.⚖️ 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
16. 16.True or false: a medicine dropper works by magnetism. (a) False (b) True
17. 17.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
18. 18.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays
20. 20.⚖️ 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
21. 21.🧺 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 stiff postcard
22. 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
23. 23.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.⚖️ 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) how full the glass is (b) the same glass (c) the way we turn it (d) the same card
25. 25.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
26. 26.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.True or false: a fridge magnet works by air pressure. (a) False (b) True
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) turmeric powder (d) a stiff postcard
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
30. 30.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) air pushes it up (d) the straw is hot
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a glass of water (d) a balloon
32. 32.⚖️ 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 the one thing we change. (a) False (b) True
33. 33.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) yeast (d) a stiff postcard
35. 35.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
37. 37.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a compass needle

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