Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 56 · 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.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
2. 2.⚖️ 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 way we turn it (c) the same glass (d) how full the glass is
3. 3.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.True or false: turmeric powder 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 kept the same? (a) whether the card stays (b) how full the glass is (c) the way we turn it
6. 6.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a suction hook (d) a drinking straw
8. 8.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a magnetic chess set (d) a magnetic pin holder
9. 9.True or false: a suction hook works by air pressure. (a) False (b) True
10. 10.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
11. 11.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a compass needle (d) a medicine dropper
12. 12.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a suction hook (d) a fridge magnet
13. 13.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a fridge magnet (d) a drinking straw
14. 14.⚖️ 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) the way we turn it (d) how full the glass is
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a balloon (b) a stiff postcard (c) a towel (d) a glass of water
16. 16.🥛 Which of these works by magnetism? (a) a drinking straw (b) a magnetic chess set (c) a medicine dropper (d) a bicycle pump
17. 17.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) friction (c) air pressure (d) sunlight
18. 18.⚖️ 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) False (b) True
19. 19.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
20. 20.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a drinking straw (c) a suction hook (d) a compass needle
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.⚖️ 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) False (b) True
24. 24.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.🧺 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) turmeric powder (d) a glass of water
26. 26.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a vacuum cleaner (d) a bicycle pump
27. 27.🛟 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
28. 28.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
31. 31.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a battery cell (c) a mirror (d) a stiff postcard
33. 33.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 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) yeast (d) a sink or a bucket
36. 36.True or false: a vacuum cleaner works by air pressure. (a) True (b) False
37. 37.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
38. 38.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic pin holder (d) a compass needle
39. 39.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed

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