Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 860 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.True or false: a bicycle pump works by magnetism. (a) False (b) True
3. 3.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
4. 4.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a suction hook (d) a drinking straw
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a balloon
6. 6.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) yeast (d) a battery cell
7. 7.🔮 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
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🧺 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 sink or a bucket
10. 10.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.⚖️ 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) whether the card stays (b) how full the glass is (c) the same glass (d) the same card
12. 12.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
13. 13.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a drinking straw (c) a medicine dropper (d) a suction hook
14. 14.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
15. 15.True or false: a compass needle works by air pressure. (a) False (b) True
16. 16.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a medicine dropper (c) a fridge magnet (d) a bicycle pump
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a mirror (c) a glass of water (d) a towel
19. 19.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
20. 20.True or false: a fridge magnet works by air pressure. (a) True (b) False
21. 21.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
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 keep it the same (b) we measure it (c) we change it
23. 23.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) a medicine dropper (b) a compass needle (c) a fridge magnet (d) a magnetic pin holder
26. 26.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a magnetic pin holder
29. 29.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
30. 30.⚖️ 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 the one thing we change. (a) False (b) True
31. 31.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the card flies away (c) the glass breaks (d) the card stays on
32. 32.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.⚖️ 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 same glass (c) whether the card stays
34. 34.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) sand (d) water
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
36. 36.⚖️ 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 change it (c) we keep it the same
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic chess set (d) a magnetic pin holder
38. 38.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
39. 39.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner

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