Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 920 · 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 suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
2. 2.⚖️ 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 same card (b) the way we turn it (c) how full the glass is (d) whether the card stays
3. 3.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
4. 4.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
5. 5.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a drinking straw (c) a vacuum cleaner (d) a magnetic pin holder
6. 6.⚖️ 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 glass (c) whether the card stays (d) how full the glass is
7. 7.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a suction hook (d) a magnetic pin holder
8. 8.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a magnetic pin holder (d) a fridge magnet
9. 9.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
12. 12.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
13. 13.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.⚖️ 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
15. 15.True or false: a magnetic chess set works by magnetism. (a) True (b) False
16. 16.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) a suction hook (b) a bicycle pump (c) a magnetic chess set (d) a vacuum cleaner
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) yeast (c) a glass of water (d) a stiff postcard
19. 19.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the water turns to ice (b) the glass breaks (c) the card flies away (d) the card stays on
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a glass of water (d) a balloon
21. 21.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
22. 22.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.True or false: a battery cell is needed for the card-on-a-glass trick. (a) True (b) False
24. 24.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) yeast (d) a towel
25. 25.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) water (d) smoke
26. 26.⚖️ 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 keep it the same (c) we measure it
27. 27.⚖️ 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) True (b) False
28. 28.True or false: a bicycle pump works by magnetism. (a) True (b) False
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 stiff postcard (c) a battery cell (d) a towel
30. 30.True or false: a compass needle works by air pressure. (a) True (b) False
31. 31.⚖️ 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
32. 32.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) magnetism (c) sunlight (d) friction
33. 33.⚖️ 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
34. 34.⚖️ 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 measure it (b) we keep it the same (c) we change it
35. 35.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) the cold water (c) a magnet (d) air pushing up
37. 37.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a mirror (c) a sink or a bucket (d) yeast

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