Air Pressure Experiment Worksheet

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

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