Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 987 · 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 is needed for the card-on-a-glass trick? (a) yeast (b) a mirror (c) a stiff postcard (d) a battery cell
2. 2.⚖️ 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
3. 3.🥛 Why is it best to fill the glass right to the top? (a) it looks nicer (b) little air left inside (c) the card gets wet (d) water is heavier
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a fridge magnet
5. 5.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a drinking straw
6. 6.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
7. 7.⚖️ 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) how full the glass is (b) the way we turn it (c) the same card (d) the same glass
8. 8.⚖️ 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
9. 9.True or false: a magnet is needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🥛 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
11. 11.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a fridge magnet
12. 12.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) over a laptop (c) near a plug point (d) on a bed
13. 13.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a medicine dropper (c) a fridge magnet (d) a magnetic pin holder
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a battery cell (d) turmeric powder
15. 15.🧺 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 glass of water (d) a balloon
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.True or false: a fridge magnet works by magnetism. (a) True (b) False
18. 18.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a suction hook (d) a fridge magnet
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a glass of water (d) a stiff postcard
20. 20.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.⚖️ 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
22. 22.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a magnetic chess set (c) a suction hook (d) a medicine dropper
25. 25.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to cool the glass (c) to catch any spills (d) to grow plants
26. 26.True or false: a magnetic pin holder works by magnetism. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a medicine dropper (b) a bicycle pump (c) a compass needle (d) a drinking straw
28. 28.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
29. 29.🧺 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) yeast (d) a stiff postcard
30. 30.True or false: a compass needle works by magnetism. (a) False (b) True
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) yeast
32. 32.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a glass of water (c) a towel (d) turmeric powder
33. 33.True or false: a drinking straw works by magnetism. (a) True (b) False
34. 34.True or false: a magnet is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
36. 36.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a compass needle (d) a fridge magnet
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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 kept the same. (a) True (b) False
39. 39.🧺 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 glass of water (d) a sink or a bucket
40. 40.⚖️ 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

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