Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 797 · 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.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
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.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) on a bed (d) near a plug point
4. 4.⚖️ 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) True (b) False
5. 5.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic chess set (d) a suction hook
6. 6.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a vacuum cleaner (d) a magnetic chess set
7. 7.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.🧺 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 glass of water (d) a magnet
10. 10.🥛 Which of these works by magnetism? (a) a suction hook (b) a fridge magnet (c) a vacuum cleaner (d) a drinking straw
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
12. 12.⚖️ 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) the same card (d) how full the glass is
13. 13.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
14. 14.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a compass needle
15. 15.⚖️ 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 keep it the same (b) we change it (c) we measure it
16. 16.True or false: a compass needle works by magnetism. (a) True (b) False
17. 17.True or false: a magnetic chess set works by air pressure. (a) True (b) False
18. 18.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a magnetic pin holder (c) a bicycle pump (d) a suction hook
19. 19.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
20. 20.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a medicine dropper (c) a suction hook (d) a fridge magnet
21. 21.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) the bottle is magnetic (c) air inside pushes back (d) water is hiding there
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a sink or a bucket (c) turmeric powder (d) a battery cell
24. 24.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner
25. 25.🔍 Which is the odd one out? (a) a suction hook (b) a drinking straw (c) a magnetic chess set (d) a bicycle pump
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a battery cell (d) a towel
27. 27.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
28. 28.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) yeast (d) a sink or a bucket
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
33. 33.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) a stiff postcard (d) a glass of water
34. 34.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
35. 35.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) water (d) smoke
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a magnetic pin holder (d) a magnetic chess set
38. 38.⚖️ 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) True (b) False
39. 39.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a drinking straw
40. 40.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure

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