Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 547 · 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 works by magnetism? (a) a drinking straw (b) a medicine dropper (c) a fridge magnet (d) a vacuum cleaner
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
3. 3.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
4. 4.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a stiff postcard (d) yeast
6. 6.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) magnetism (d) friction
7. 7.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a sink or a bucket (d) a magnet
9. 9.⚖️ 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
10. 10.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) turmeric powder (c) a towel (d) a mirror
12. 12.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a magnet (c) a stiff postcard (d) a towel
15. 15.⚖️ 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 glass (b) whether the card stays (c) how full the glass is
16. 16.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) water (c) smoke (d) air
18. 18.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a medicine dropper (d) a compass needle
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.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) the bottle is magnetic (d) water is hiding there
21. 21.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
22. 22.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic chess set (c) a vacuum cleaner (d) a suction hook
25. 25.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
27. 27.⚖️ 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 measure it (c) we keep it the same
28. 28.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
29. 29.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
30. 30.🥛 Which of these works by air pressure? (a) a compass needle (b) a drinking straw (c) a fridge magnet (d) a magnetic pin holder
31. 31.⚖️ 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
32. 32.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) 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 mirror (c) a glass of water (d) a towel
34. 34.True or false: a magnetic chess set works by magnetism. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a medicine dropper (d) a bicycle pump
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 sink or a bucket (c) a towel (d) yeast
37. 37.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
38. 38.True or false: yeast is needed for the card-on-a-glass trick. (a) False (b) True
39. 39.True or false: a drinking straw works by air pressure. (a) False (b) True
40. 40.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a stiff postcard (c) a glass of water (d) turmeric powder

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