Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 428 · 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.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) the bottle is magnetic (c) the cap is sticky (d) air inside pushes back
3. 3.⚖️ 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) the same card (c) whether the card stays
4. 4.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
5. 5.⚖️ 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 keep it the same (b) we change it (c) we measure it
6. 6.🥛 Why is it best to fill the glass right to the top? (a) little air left inside (b) water is heavier (c) it looks nicer (d) the card gets wet
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
8. 8.🥛 Which of these works by magnetism? (a) a magnetic pin holder (b) a bicycle pump (c) a vacuum cleaner (d) a drinking straw
9. 9.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a mirror (d) a battery cell
10. 10.True or false: a suction hook works by air pressure. (a) True (b) False
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a towel
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) a balloon (d) turmeric powder
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a stiff postcard
14. 14.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a medicine dropper (d) a compass needle
15. 15.⚖️ 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 same glass (b) how full the glass is (c) whether the card stays (d) the same card
16. 16.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) over a sink or bucket (d) near a plug point
17. 17.⚖️ 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) the way we turn it (c) whether the card stays
18. 18.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.⚖️ 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 what we measure. (a) False (b) True
20. 20.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
23. 23.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a towel (c) a mirror (d) a battery cell
24. 24.⚖️ 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) whether the card stays (b) how full the glass is (c) the way we turn it (d) the same card
25. 25.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
26. 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
27. 27.⚖️ 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) True (b) False
28. 28.True or false: a compass needle works by magnetism. (a) True (b) False
29. 29.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a vacuum cleaner (d) a magnetic pin holder
31. 31.🥛 Which of these works by air pressure? (a) a drinking straw (b) a magnetic chess set (c) a compass needle (d) a fridge magnet
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a suction hook (c) a magnetic chess set (d) a compass needle
33. 33.True or false: a bicycle pump works by magnetism. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
35. 35.🧺 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 balloon (d) a glass of water
36. 36.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
37. 37.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) a magnet
39. 39.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
40. 40.⚖️ 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

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