Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 872 · 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 kept the same? (a) how full the glass is (b) whether the card stays (c) the way we turn it
2. 2.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) juice likes plastic (d) the straw is magnetic
3. 3.True or false: a fridge magnet works by air pressure. (a) True (b) False
4. 4.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a medicine dropper (d) a compass needle
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a glass of water (c) a mirror (d) a battery cell
6. 6.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
7. 7.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) turmeric powder (d) a mirror
8. 8.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.⚖️ 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 measure it (b) we change it (c) we keep it the same
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 what we measure. (a) False (b) True
11. 11.⚖️ 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 same card (c) how full the glass is (d) the same glass
12. 12.🛟 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
13. 13.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
14. 14.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
15. 15.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
16. 16.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.True or false: a suction hook works by air pressure. (a) False (b) True
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 kept the same. (a) True (b) False
19. 19.🔮 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
20. 20.🔍 Which is the odd one out? (a) a medicine dropper (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
21. 21.⚖️ 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) the way we turn it (c) whether the card stays (d) how full the glass is
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a sink or a bucket (d) a stiff postcard
23. 23.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic pin holder (c) a magnetic chess set (d) a compass needle
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) turmeric powder (c) a magnet (d) a balloon
26. 26.⚖️ 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) True (b) False
27. 27.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a vacuum cleaner (d) a suction hook
28. 28.🧺 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 balloon (d) a glass of water
29. 29.⚖️ 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
30. 30.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
31. 31.🧺 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 glass of water (d) a magnet
32. 32.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) yeast (d) a sink or a bucket
36. 36.⚖️ 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
37. 37.⚖️ 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 keep it the same (b) we change it (c) we measure it
38. 38.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic pin holder (c) a magnetic chess set (d) a fridge magnet
39. 39.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a magnetic pin holder (d) a suction hook

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