Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 231 · 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.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) False (b) True
2. 2.🥛 Does a bicycle pump 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? Which of these is kept the same? (a) whether the card stays (b) the same card (c) how full the glass is
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a compass needle (c) a magnetic chess set (d) a bicycle pump
5. 5.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
6. 6.🛟 Where should you do the card-and-glass trick? (a) on a bed (b) over a laptop (c) near a plug point (d) over a sink or bucket
7. 7.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.⚖️ 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) False (b) True
10. 10.⚖️ 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 change it (c) we measure it
11. 11.⚖️ 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 what we measure. (a) True (b) False
12. 12.True or false: a vacuum cleaner works by magnetism. (a) True (b) False
13. 13.⚖️ 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
14. 14.🛟 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
15. 15.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a magnetic pin holder (d) a compass needle
16. 16.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a suction hook (d) a vacuum cleaner
17. 17.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a fridge magnet
19. 19.True or false: a medicine dropper works by magnetism. (a) False (b) True
20. 20.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) a sink or a bucket (d) yeast
21. 21.⚖️ 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) the same glass (c) how full the glass is (d) the way we turn it
22. 22.⚖️ 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 the one thing we change. (a) False (b) True
23. 23.🧺 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 magnet (d) a sink or a bucket
24. 24.⚖️ 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) True (b) False
25. 25.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🥛 Which of these works by air pressure? (a) a medicine dropper (b) a fridge magnet (c) a magnetic chess set (d) a compass needle
29. 29.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) yeast (c) a stiff postcard (d) a magnet
31. 31.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) a magnet (d) glue on the card
32. 32.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) the card gets wet (c) little air left inside (d) water is heavier
33. 33.True or false: a drinking straw works by magnetism. (a) True (b) False
34. 34.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
36. 36.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
37. 37.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a towel (d) a mirror
38. 38.🧺 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 sink or a bucket (d) a glass of water
39. 39.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a drinking straw (d) a magnetic chess set
40. 40.⚖️ 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) whether the card stays (c) the way we turn it

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