Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 431 · 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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a glass of water (d) yeast
2. 2.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a suction hook (d) a fridge magnet
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a sink or a bucket (d) a battery cell
4. 4.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic pin holder (d) a drinking straw
5. 5.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) air pushes it up (d) juice likes plastic
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is hotter (c) it will not break (d) it is heavier
7. 7.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
8. 8.⚖️ 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
9. 9.⚖️ 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 way we turn it (b) how full the glass is (c) whether the card stays
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.🔍 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 card flies away (c) the glass breaks (d) the card stays on
13. 13.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a towel (d) a magnet
15. 15.⚖️ 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 measure it (c) we keep it the same
16. 16.True or false: a compass needle works by magnetism. (a) True (b) False
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a stiff postcard
18. 18.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
19. 19.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.⚖️ 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
21. 21.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a stiff postcard (d) a battery cell
23. 23.True or false: a fridge magnet works by magnetism. (a) True (b) False
24. 24.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a glass of water (d) a sink or a bucket
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 kept the same. (a) False (b) True
26. 26.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) the cap is sticky (d) water is hiding there
27. 27.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a mirror (d) a stiff postcard
31. 31.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a sink or a bucket (d) a balloon
33. 33.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) yeast (d) a magnet
35. 35.⚖️ 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 the one thing we change. (a) False (b) True
36. 36.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a glass of water (d) a battery cell
37. 37.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🔍 Which is the odd one out? (a) a drinking straw (b) a compass needle (c) a fridge magnet (d) a magnetic chess set
39. 39.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 same card”? (a) we change it (b) we measure it (c) we keep it the same

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