Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 578 · 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.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same card
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.⚖️ 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
4. 4.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) yeast (c) a battery cell (d) turmeric powder
5. 5.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a sink or a bucket (c) a stiff postcard (d) a glass of water
6. 6.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.True or false: a fridge magnet works by magnetism. (a) False (b) True
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 air pressure? (a) a compass needle (b) a fridge magnet (c) a magnetic pin holder (d) a medicine dropper
11. 11.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a battery cell (b) a towel (c) a stiff postcard (d) a glass of water
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
15. 15.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
18. 18.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to grow plants (c) to make it rain (d) to cool the glass
21. 21.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🧺 Which of these is not needed for the card-on-a-glass trick? (a) turmeric powder (b) a stiff postcard (c) a towel (d) a sink or a bucket
23. 23.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
24. 24.⚖️ 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) how full the glass is (b) whether the card stays (c) the way we turn it
25. 25.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
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) the same card (c) how full the glass is
27. 27.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ 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 the one thing we change. (a) True (b) False
29. 29.🔮 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 cap is sticky (d) the bottle is magnetic
30. 30.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) yeast (c) a glass of water (d) a towel
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a sink or a bucket (c) a glass of water (d) a towel
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a mirror
35. 35.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a medicine dropper (d) a compass needle
36. 36.🧺 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) a balloon
37. 37.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
38. 38.True or false: a drinking straw works by magnetism. (a) True (b) False
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a stiff postcard (d) a towel
40. 40.True or false: a medicine dropper works by magnetism. (a) True (b) False

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