Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 964 · 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) a sink or a bucket (b) a battery cell (c) a glass of water (d) a stiff postcard
2. 2.🧺 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) turmeric powder (d) a stiff postcard
3. 3.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a magnet (d) a balloon
4. 4.⚖️ 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
5. 5.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it (d) the same card
6. 6.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
7. 7.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) smoke (c) air (d) sand
9. 9.🧺 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 magnet (d) a sink or a bucket
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
11. 11.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
12. 12.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic chess set (d) a drinking straw
14. 14.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
15. 15.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a glass of water (d) a towel
17. 17.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.⚖️ 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
19. 19.🔍 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 glass breaks (c) the card stays on (d) the card flies away
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🧺 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) a towel (d) a mirror
22. 22.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
23. 23.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
24. 24.🔮 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
25. 25.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a magnetic chess set
26. 26.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “whether the card stays”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.⚖️ 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
29. 29.🥤 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
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a bicycle pump
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a balloon (b) a sink or a bucket (c) a towel (d) a stiff postcard
32. 32.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is
33. 33.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a vacuum cleaner (d) a magnetic chess set
34. 34.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🥛 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
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ 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) the same card (b) the same glass (c) how full the glass is (d) the way we turn it
40. 40.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed

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