Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 309 · 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 medicine dropper (b) a bicycle pump (c) a fridge magnet (d) a drinking straw
2. 2.⚖️ 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) whether the card stays (b) how full the glass is (c) the same card
3. 3.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it is magnetic (c) it is hotter (d) it will not break
5. 5.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
6. 6.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.⚖️ 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) how full the glass is (c) the same card (d) whether the card stays
8. 8.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) friction (c) sunlight (d) magnetism
10. 10.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
12. 12.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a sink or a bucket
13. 13.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) yeast (d) a glass of water
14. 14.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
15. 15.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the cap is sticky (c) the bottle is magnetic (d) water is hiding there
16. 16.⚖️ 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 change it (b) we measure it (c) we keep it the same
17. 17.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
18. 18.🧺 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 sink or a bucket
19. 19.⚖️ 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) whether the card stays (b) the way we turn it (c) how full the glass is
20. 20.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
21. 21.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
23. 23.True or false: a fridge magnet works by air pressure. (a) True (b) False
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) smoke (d) sand
25. 25.⚖️ 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
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) yeast
27. 27.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
29. 29.🥛 Which of these works by magnetism? (a) a drinking straw (b) a vacuum cleaner (c) a medicine dropper (d) a compass needle
30. 30.🧺 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 towel
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a glass of water (c) a towel (d) a stiff postcard
32. 32.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a laptop (d) over a sink or bucket
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a balloon (c) turmeric powder (d) a towel
35. 35.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a suction hook
37. 37.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
38. 38.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
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 measure it (b) we keep it the same (c) we change it

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