Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 457 · 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.🛟 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
2. 2.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
3. 3.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a drinking straw
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a balloon (d) a glass of water
5. 5.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.⚖️ 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) whether the card stays (c) the same card
8. 8.🧺 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 stiff postcard
9. 9.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is hotter (d) it is magnetic
10. 10.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a fridge magnet (d) a bicycle pump
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a balloon
12. 12.🥛 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
13. 13.⚖️ 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 change it (b) we keep it the same (c) we measure it
14. 14.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
15. 15.⚖️ 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 kept the same. (a) False (b) True
16. 16.🥛 Which of these works by air pressure? (a) a compass needle (b) a fridge magnet (c) a suction hook (d) a magnetic chess set
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a sink or a bucket (d) a mirror
18. 18.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
19. 19.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the cap is sticky (c) the bottle is magnetic (d) air inside pushes back
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
21. 21.True or false: a medicine dropper works by magnetism. (a) False (b) True
22. 22.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.⚖️ 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 change it (b) we keep it the same (c) we measure it
24. 24.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚖️ 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 same glass (c) the same card (d) the way we turn it
27. 27.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a vacuum cleaner
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) yeast (d) a towel
29. 29.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) glue on the card (d) air pushing up
30. 30.🔍 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 flies away (d) the card stays on
31. 31.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a compass needle (c) a medicine dropper (d) a vacuum cleaner
32. 32.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
36. 36.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a mirror (c) a towel (d) a sink or a bucket
38. 38.⚖️ 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) whether the card stays (c) the same glass
39. 39.🥤 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
40. 40.True or false: a bicycle pump works by air pressure. (a) True (b) False

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