Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 866 · 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.True or false: a magnetic chess set works by air pressure. (a) False (b) True
2. 2.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
3. 3.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a fridge magnet (c) a suction hook (d) a medicine dropper
4. 4.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a balloon
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.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a glass of water (d) yeast
7. 7.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a medicine dropper (d) a magnetic pin holder
8. 8.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
9. 9.⚖️ 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
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 card”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.⚖️ 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 same glass (b) the way we turn it (c) whether the card stays (d) how full the glass is
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it will not break (d) it is magnetic
13. 13.⚖️ 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 way we turn it (c) whether the card stays
14. 14.⚖️ 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 the one thing we change. (a) True (b) False
15. 15.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card flies away (b) the card stays on (c) the water turns to ice (d) the glass breaks
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.True or false: a medicine dropper works by magnetism. (a) False (b) True
18. 18.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a sink or a bucket (c) a stiff postcard (d) turmeric powder
19. 19.True or false: a fridge magnet 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 battery cell (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
21. 21.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
22. 22.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
23. 23.⚖️ 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
24. 24.⚖️ 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 keep it the same (b) we change it (c) we measure it
25. 25.🥛 Which of these works by magnetism? (a) a compass needle (b) a drinking straw (c) a bicycle pump (d) a vacuum cleaner
26. 26.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
29. 29.True or false: a mirror is needed for the card-on-a-glass trick. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a compass needle (d) a suction hook
31. 31.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
34. 34.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a sink or a bucket (c) turmeric powder (d) a magnet
37. 37.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to cool the glass (c) to grow plants (d) to make it rain
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
40. 40.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed

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