Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 806 · 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.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 card”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a mirror (b) a stiff postcard (c) a sink or a bucket (d) a towel
5. 5.⚖️ 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
6. 6.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) air (c) water (d) sand
8. 8.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a sink or a bucket (c) a glass of water (d) a towel
10. 10.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) it looks nicer (d) little air left inside
11. 11.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a sink or bucket (c) near a plug point (d) over a laptop
12. 12.True or false: a bicycle pump works by magnetism. (a) True (b) False
13. 13.🧺 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 sink or a bucket (d) a magnet
14. 14.🧺 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 glass of water (c) a towel (d) a battery cell
15. 15.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a fridge magnet (d) a magnetic pin holder
16. 16.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) False (b) True
18. 18.⚖️ 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) whether the card stays (c) the same glass (d) how full the glass is
19. 19.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
20. 20.⚖️ 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 change it (b) we keep it the same (c) we measure it
21. 21.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a glass of water (d) a towel
23. 23.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
24. 24.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
25. 25.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a fridge magnet (d) a magnetic chess set
27. 27.⚖️ 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) True (b) False
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a balloon (c) a glass of water (d) a mirror
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a bicycle pump (c) a suction hook (d) a vacuum cleaner
31. 31.🥛 Which of these works by magnetism? (a) a suction hook (b) a compass needle (c) a vacuum cleaner (d) a drinking straw
32. 32.🧺 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 towel (d) yeast
33. 33.True or false: a suction hook works by air pressure. (a) False (b) True
34. 34.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a medicine dropper (d) a magnetic pin holder
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
37. 37.⚖️ 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 glass (c) whether the card stays
38. 38.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
39. 39.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🧺 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 balloon

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