Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 88 · 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 magnetic chess set (d) a vacuum cleaner
2. 2.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) a battery cell
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) water is heavier (d) little air left inside
5. 5.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) over a laptop (d) near a plug point
6. 6.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🔍 Which is the odd one out? (a) a fridge magnet (b) a vacuum cleaner (c) a bicycle pump (d) a suction hook
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
9. 9.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
10. 10.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a bicycle pump (d) a vacuum cleaner
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 way we turn it (b) the same card (c) how full the glass is (d) whether the card stays
13. 13.True or false: a magnetic chess set works by air pressure. (a) False (b) True
14. 14.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
15. 15.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a magnet (d) turmeric powder
17. 17.🔍 Which is the odd one out? (a) a compass needle (b) a vacuum cleaner (c) a fridge magnet (d) a magnetic pin holder
18. 18.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
19. 19.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a sink or a bucket (d) yeast
22. 22.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a suction hook (d) a compass needle
24. 24.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a magnetic pin holder (d) a suction hook
25. 25.True or false: a bicycle pump works by magnetism. (a) True (b) False
26. 26.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
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 glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
29. 29.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) yeast (c) a balloon (d) a magnet
31. 31.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
32. 32.True or false: a fridge magnet works by air pressure. (a) False (b) True
33. 33.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a balloon (c) yeast (d) a mirror
34. 34.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a magnetic chess set (c) a fridge magnet (d) a suction hook
35. 35.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the glass breaks (d) the card flies away
36. 36.🧺 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 magnet (d) a sink or a bucket
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) turmeric powder (d) a sink or a bucket
38. 38.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
39. 39.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
40. 40.True or false: a medicine dropper works by magnetism. (a) False (b) True

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