Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 909 · 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? Which of these is the one thing we change? (a) how full the glass is (b) whether the card stays (c) the same glass (d) the way we turn it
2. 2.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
3. 3.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a fridge magnet (d) a vacuum cleaner
4. 4.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
5. 5.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is magnetic (c) juice likes plastic (d) the straw is hot
6. 6.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
7. 7.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.⚖️ 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
9. 9.⚖️ 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 kept the same. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
11. 11.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
12. 12.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.True or false: a magnetic chess set works by air pressure. (a) True (b) False
14. 14.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to catch any spills (c) to make it rain (d) to grow plants
16. 16.True or false: a drinking straw works by magnetism. (a) True (b) False
17. 17.⚖️ 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) the same glass (b) whether the card stays (c) how full the glass is (d) the way we turn it
18. 18.⚖️ 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) False (b) True
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it will not break (d) it is hotter
20. 20.⚖️ 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 way we turn it
21. 21.⚖️ 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
22. 22.🧺 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) a balloon (d) a glass of water
23. 23.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a suction hook (c) a magnetic chess set (d) a drinking straw
24. 24.True or false: a fridge magnet works by air pressure. (a) False (b) True
25. 25.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the glass breaks (c) the water turns to ice (d) the card stays on
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) water is heavier (c) little air left inside (d) the card gets wet
30. 30.True or false: a suction hook works by air pressure. (a) False (b) True
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a mirror
32. 32.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) over a laptop (d) near a plug point
33. 33.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
35. 35.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.🧺 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 towel (d) a stiff postcard
37. 37.🧺 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) a mirror (d) a glass of water
38. 38.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
40. 40.⚖️ 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 measure it (b) we keep it the same (c) we change it

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