Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 403 · 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.True or false: a medicine dropper works by magnetism. (a) True (b) False
2. 2.⚖️ 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 change it (b) we measure it (c) we keep it the same
3. 3.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
4. 4.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
7. 7.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) yeast (d) a glass of water
8. 8.🛟 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 hotter (d) it is heavier
9. 9.⚖️ 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
10. 10.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) on a bed (c) near a plug point (d) over a sink or bucket
11. 11.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a suction hook
12. 12.True or false: a suction hook works by air pressure. (a) False (b) True
13. 13.🥛 Does a compass needle work by air pressure or by magnetism? (a) air pressure (b) magnetism
14. 14.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
15. 15.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) a magnet
16. 16.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a bicycle pump (c) a magnetic chess set (d) a medicine dropper
17. 17.🧺 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 sink or a bucket (d) yeast
18. 18.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a drinking straw
20. 20.🥛 Which of these works by air pressure? (a) a compass needle (b) a vacuum cleaner (c) a magnetic pin holder (d) a magnetic chess set
21. 21.⚖️ 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
22. 22.⚖️ 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) True (b) False
23. 23.🔍 Which is the odd one out? (a) a fridge magnet (b) a compass needle (c) a vacuum cleaner (d) a magnetic chess set
24. 24.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a bicycle pump (d) a magnetic pin holder
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a glass of water (d) turmeric powder
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 mirror (c) a stiff postcard (d) a sink or a bucket
27. 27.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
28. 28.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure
29. 29.⚖️ 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 way we turn it (c) how full the glass is (d) the same card
30. 30.True or false: a bicycle pump works by magnetism. (a) True (b) False
31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
32. 32.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a glass of water (c) a stiff postcard (d) a battery cell
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
34. 34.⚖️ 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) the same card (d) how full the glass is
35. 35.🔮 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) the cap is sticky (d) water is hiding there
36. 36.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) turmeric powder (c) a stiff postcard (d) a towel
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a magnet (c) yeast (d) a balloon
38. 38.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic pin holder (c) a fridge magnet (d) a drinking straw
39. 39.⚖️ 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 kept the same. (a) False (b) True
40. 40.⚖️ 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 measure it (c) we change it

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