Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 947 · 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 is the odd one out? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a vacuum cleaner
2. 2.🧺 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
3. 3.🧺 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 glass of water (d) a stiff postcard
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is hotter (c) it is magnetic (d) it will not break
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
6. 6.True or false: a medicine dropper works by air pressure. (a) True (b) False
7. 7.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
9. 9.⚖️ 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
10. 10.True or false: a suction hook works by magnetism. (a) True (b) False
11. 11.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
12. 12.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.⚖️ 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) whether the card stays (c) the same card (d) how full the glass is
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a towel
15. 15.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.True or false: a drinking straw works by air pressure. (a) False (b) True
17. 17.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to grow plants (c) to cool the glass (d) to catch any spills
18. 18.⚖️ 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 kept the same. (a) False (b) True
19. 19.⚖️ 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 what we measure. (a) False (b) True
20. 20.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
21. 21.True or false: a drinking straw works by magnetism. (a) True (b) False
22. 22.⚖️ 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 the one thing we change. (a) False (b) True
23. 23.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a stiff postcard (d) yeast
25. 25.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) yeast (d) a magnet
27. 27.🔍 Which is the odd one out? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a magnetic pin holder
28. 28.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
29. 29.True or false: a fridge magnet works by air pressure. (a) True (b) False
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a mirror (d) a sink or a bucket
31. 31.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) yeast (d) a sink or a bucket
34. 34.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a mirror (c) yeast (d) a towel
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a towel (d) a sink or a bucket
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a fridge magnet (d) a medicine dropper
38. 38.🧺 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 magnet (d) a stiff postcard
39. 39.⚖️ 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 same glass
40. 40.⚖️ 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) the way we turn it (c) how full the glass is (d) the same glass

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