Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 811 · 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.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the water turns to ice (d) the card stays on
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) turmeric powder (d) a magnet
3. 3.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
4. 4.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
6. 6.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
8. 8.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a towel (d) a glass of water
9. 9.🧺 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 sink or a bucket
10. 10.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a drinking straw (d) a medicine dropper
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a battery cell (d) a balloon
13. 13.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) a magnet (d) a mirror
15. 15.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.True or false: a medicine dropper works by air pressure. (a) True (b) False
17. 17.⚖️ 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 the one thing we change. (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 towel (b) a stiff postcard (c) a sink or a bucket (d) turmeric powder
19. 19.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a magnetic pin holder (d) a magnetic chess set
23. 23.🧺 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 glass of water (d) yeast
24. 24.🥛 Which of these works by magnetism? (a) a drinking straw (b) a fridge magnet (c) a bicycle pump (d) a vacuum cleaner
25. 25.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.True or false: a bicycle pump works by air pressure. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a bicycle pump (d) a magnetic chess set
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) yeast (d) a balloon
32. 32.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
33. 33.True or false: a fridge magnet works by air pressure. (a) True (b) False
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
35. 35.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
36. 36.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a magnetic chess set (d) a vacuum cleaner
37. 37.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
38. 38.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
39. 39.⚖️ 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) True (b) False
40. 40.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break

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