Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 790 · 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.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.True or false: a drinking straw works by magnetism. (a) False (b) True
3. 3.True or false: a fridge magnet works by magnetism. (a) False (b) True
4. 4.🛟 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 heavier (d) it is magnetic
5. 5.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
6. 6.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a medicine dropper
8. 8.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.🧺 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 glass of water (c) a battery cell (d) a stiff postcard
11. 11.⚖️ 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
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🔮 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
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 glass (b) how full the glass is (c) whether the card stays (d) the way we turn it
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
16. 16.⚖️ 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
17. 17.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a bicycle pump (d) a magnetic pin holder
18. 18.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a vacuum cleaner (c) a drinking straw (d) a medicine dropper
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a glass of water (c) a stiff postcard (d) a towel
20. 20.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
22. 22.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 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 stiff postcard (c) turmeric powder (d) a glass of water
24. 24.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a magnetic chess set
26. 26.⚖️ 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) False (b) True
27. 27.True or false: a compass needle works by magnetism. (a) True (b) False
28. 28.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a medicine dropper (c) a magnetic chess set (d) a vacuum cleaner
31. 31.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) air pushing up (d) a magnet
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
33. 33.True or false: a suction hook works by magnetism. (a) True (b) False
34. 34.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a vacuum cleaner (d) a bicycle pump
35. 35.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
36. 36.⚖️ 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) False (b) True
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 keep it the same (c) we change it
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a towel
39. 39.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a glass of water (d) a sink or a bucket

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