Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 713 · 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.⚖️ 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) True (b) False
2. 2.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
3. 3.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a suction hook (d) a compass needle
4. 4.True or false: a magnetic chess set works by magnetism. (a) True (b) False
5. 5.⚖️ 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
6. 6.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
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 way we turn it”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 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 stiff postcard (d) a mirror
10. 10.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a magnetic pin holder
12. 12.🧺 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) yeast (d) a glass of water
13. 13.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
14. 14.True or false: a medicine dropper works by magnetism. (a) False (b) True
15. 15.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
16. 16.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a compass needle
17. 17.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a medicine dropper
18. 18.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a glass of water (d) a sink or a bucket
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the card flies away (c) the glass breaks (d) the water turns to ice
20. 20.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a balloon (c) a sink or a bucket (d) a towel
23. 23.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) juice likes plastic (c) the straw is magnetic (d) air pushes it up
24. 24.⚖️ 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) the same glass (c) the way we turn it (d) how full the glass is
25. 25.⚖️ 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) whether the card stays (b) the way we turn it (c) the same card (d) how full the glass is
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) yeast (c) turmeric powder (d) a stiff postcard
27. 27.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
28. 28.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a sink or a bucket (d) a mirror
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a balloon (d) turmeric powder
31. 31.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a compass needle (d) a medicine dropper
33. 33.⚖️ 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
34. 34.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🥛 Which of these works by magnetism? (a) a fridge magnet (b) a drinking straw (c) a suction hook (d) a medicine dropper
36. 36.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it
37. 37.🔍 Which is the odd one out? (a) a magnetic chess set (b) a fridge magnet (c) a drinking straw (d) a magnetic pin holder
38. 38.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a drinking straw
40. 40.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True

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