Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 326 · 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 needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) yeast (d) a glass of water
2. 2.🧺 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) a magnet (d) a sink or a bucket
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) turmeric powder (d) a glass of water
4. 4.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
6. 6.⚖️ 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 measure it (c) we change it
7. 7.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
8. 8.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a magnetic chess set (d) a suction hook
9. 9.🔍 Which is the odd one out? (a) a drinking straw (b) a fridge magnet (c) a vacuum cleaner (d) a suction hook
10. 10.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) it looks nicer (d) water is heavier
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 card (b) whether the card stays (c) how full the glass is (d) the same glass
12. 12.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.🔮 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) water is hiding there (d) air inside pushes back
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 kept the same. (a) False (b) True
15. 15.🧺 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) turmeric powder (d) a stiff postcard
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a battery cell (d) turmeric powder
18. 18.🧺 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 towel (d) a mirror
19. 19.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
20. 20.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
21. 21.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a bicycle pump (d) a compass needle
23. 23.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
24. 24.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a drinking straw (d) a compass needle
26. 26.⚖️ 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 way we turn it (b) whether the card stays (c) the same card (d) the same glass
27. 27.⚖️ 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 what we measure. (a) False (b) True
28. 28.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a suction hook
29. 29.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) magnetism (d) friction
31. 31.True or false: a drinking straw works by magnetism. (a) True (b) False
32. 32.⚖️ 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 what we measure. (a) True (b) False
33. 33.🔍 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
34. 34.🧺 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 balloon
35. 35.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a bicycle pump (d) a magnetic pin holder
36. 36.🧺 Do we need a balloon 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 sink or a bucket (b) a towel (c) a stiff postcard (d) yeast
38. 38.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
39. 39.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
40. 40.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a towel (d) yeast

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