Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 436 · 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? True or false: whether the card stays is the one thing we change. (a) False (b) True
2. 2.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
3. 3.True or false: a bicycle pump works by air pressure. (a) True (b) False
4. 4.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a glass of water (d) a stiff postcard
6. 6.🥛 Which of these works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a bicycle pump (d) a magnetic pin holder
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a bicycle pump (d) a fridge magnet
9. 9.🧺 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) a balloon (d) a stiff postcard
10. 10.⚖️ 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
11. 11.⚖️ 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 glass (b) the same card (c) the way we turn it (d) how full the glass is
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a balloon (d) a battery cell
13. 13.⚖️ 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
14. 14.🧺 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) turmeric powder (d) a stiff postcard
15. 15.⚖️ 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 measure it (b) we keep it the same (c) we change 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 magnet (d) a sink or a bucket
17. 17.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🧺 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 mirror (c) a glass of water (d) a towel
19. 19.🧺 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) yeast (d) a towel
20. 20.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the glass breaks (c) the card flies away (d) the water turns to ice
22. 22.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
25. 25.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
26. 26.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) sunlight (d) air pressure
27. 27.⚖️ 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) the same card (c) how full the glass is
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 card”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a bicycle pump
30. 30.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) turmeric powder (d) a magnet
32. 32.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
33. 33.⚖️ 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
34. 34.🔮 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) air inside pushes back (d) the bottle is magnetic
35. 35.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
36. 36.⚖️ 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 change it (c) we keep it the same
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? Which of these is what we measure? (a) whether the card stays (b) the same glass (c) the way we turn it (d) the same card
39. 39.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism

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