Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 875 · 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.True or false: a suction hook works by magnetism. (a) True (b) False
2. 2.🛟 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
3. 3.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) air (d) smoke
4. 4.🧺 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 battery cell (c) a glass of water (d) a towel
5. 5.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a medicine dropper (d) a drinking straw
6. 6.True or false: a magnetic chess set works by magnetism. (a) True (b) False
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ 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 change it (b) we keep it the same (c) we measure it
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ 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 change it (c) we measure it
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
13. 13.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) water is heavier (c) little air left inside (d) it looks nicer
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a battery cell (d) turmeric powder
15. 15.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.⚖️ 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
17. 17.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) friction (d) sunlight
18. 18.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
20. 20.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
21. 21.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a compass needle (d) a fridge magnet
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a balloon (d) a battery cell
23. 23.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a suction hook (d) a fridge magnet
24. 24.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
25. 25.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
26. 26.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a drinking straw (c) a fridge magnet (d) a magnetic chess set
27. 27.🧺 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 stiff postcard (c) a glass of water (d) a magnet
28. 28.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a mirror (d) a glass of water
29. 29.🔍 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 stays on (c) the card flies away (d) the water turns to ice
30. 30.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to grow plants (c) to make it rain (d) to catch any spills
31. 31.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a suction hook works by air pressure. (a) True (b) False
33. 33.True or false: a drinking straw works by air pressure. (a) True (b) False
34. 34.True or false: a compass needle works by magnetism. (a) False (b) True
35. 35.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
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 same card”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a battery cell
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a glass of water (d) a stiff postcard

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