Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 780 · 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 magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
2. 2.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
3. 3.⚖️ 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) whether the card stays (c) how full the glass is (d) the way we turn it
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) turmeric powder (d) a towel
6. 6.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
7. 7.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “how full the glass is”? (a) we keep it the same (b) we measure it (c) we change it
8. 8.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a suction hook (d) a compass needle
9. 9.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
10. 10.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a vacuum cleaner (d) a fridge magnet
11. 11.🔮 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) water is hiding there (d) the bottle is magnetic
12. 12.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
13. 13.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a drinking straw (d) a bicycle pump
14. 14.🧺 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 battery cell (c) a towel (d) a stiff postcard
15. 15.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) air pushing up (c) the cold water (d) glue on the card
16. 16.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) near a plug point (c) on a bed (d) over a sink or bucket
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a towel (c) a glass of water (d) a stiff postcard
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 the one thing we change. (a) True (b) False
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) turmeric powder (c) a mirror (d) yeast
25. 25.🧺 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 glass of water (d) a balloon
26. 26.True or false: a drinking straw works by air pressure. (a) True (b) False
27. 27.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a fridge magnet (c) a medicine dropper (d) a compass needle
28. 28.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
29. 29.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
31. 31.True or false: a medicine dropper works by magnetism. (a) True (b) False
32. 32.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) sand (c) smoke (d) air
33. 33.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a magnetic chess set (d) a vacuum cleaner
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.True or false: a sink or a bucket is not needed for the card-on-a-glass trick. (a) True (b) False
36. 36.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
37. 37.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
38. 38.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
39. 39.⚖️ 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
40. 40.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed

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