Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 90 · 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 fridge magnet works by air pressure. (a) True (b) False
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
3. 3.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the water turns to ice (c) the card flies away (d) the card stays on
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is hot (c) air pushes it up (d) the straw is magnetic
5. 5.⚖️ 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 what we measure. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic chess set (d) a drinking straw
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) turmeric powder (d) a glass of water
8. 8.⚖️ 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 way we turn it (c) the same glass (d) the same card
9. 9.⚖️ 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) False (b) True
10. 10.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a fridge magnet (d) a bicycle pump
11. 11.⚖️ 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
12. 12.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) water is hiding there (d) the cap is sticky
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a balloon (d) a sink or a bucket
14. 14.🧺 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 balloon (c) a towel (d) a stiff postcard
15. 15.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) the card gets wet (d) it looks nicer
16. 16.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🧺 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) yeast (d) a towel
18. 18.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 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 magnet (d) a stiff postcard
20. 20.⚖️ 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) True (b) False
21. 21.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
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.🧺 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 glass of water (d) a towel
24. 24.True or false: a bicycle pump works by magnetism. (a) False (b) True
25. 25.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a magnetic chess set
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a towel (d) yeast
28. 28.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a suction hook (d) a compass needle
29. 29.True or false: a compass needle works by air pressure. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
32. 32.True or false: a magnetic chess set works by magnetism. (a) False (b) True
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 the one thing we change. (a) True (b) False
34. 34.⚖️ 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) the way we turn it (c) how full the glass is
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) yeast (d) a stiff postcard
36. 36.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a glass of water (d) a stiff postcard
38. 38.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a bicycle pump (d) a drinking straw
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) yeast (d) a balloon
40. 40.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a vacuum cleaner (d) a magnetic pin holder

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