Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 380 · 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.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to cool the glass (d) to grow plants
3. 3.⚖️ 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
4. 4.⚖️ 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
5. 5.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
6. 6.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) yeast (d) a sink or a bucket
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
9. 9.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
10. 10.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 same card”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
13. 13.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.🧺 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) turmeric powder
17. 17.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
18. 18.🧺 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 magnet (d) a glass of water
19. 19.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
20. 20.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🔍 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 card stays on (c) the glass breaks (d) the water turns to ice
22. 22.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
23. 23.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.⚖️ 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
25. 25.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.🧺 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) yeast (d) a towel
27. 27.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it will not break (c) it is magnetic (d) it is heavier
28. 28.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) yeast (d) a towel
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a battery cell (d) turmeric powder
31. 31.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a mirror
33. 33.True or false: a drinking straw works by magnetism. (a) True (b) False
34. 34.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
35. 35.True or false: a suction hook works by magnetism. (a) False (b) True
36. 36.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) it looks nicer (c) little air left inside (d) water is heavier
37. 37.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True

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