Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 715 · 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 pin holder works by air pressure. (a) False (b) True
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
3. 3.🔍 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 water turns to ice (c) the card stays on (d) the glass breaks
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to catch any spills (b) to make it rain (c) to grow plants (d) to cool the glass
5. 5.🥛 Which of these works by air pressure? (a) a magnetic chess set (b) a compass needle (c) a medicine dropper (d) a fridge magnet
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is heavier (c) it is magnetic (d) it will not break
8. 8.🔍 Which is the odd one out? (a) a magnetic chess set (b) a suction hook (c) a magnetic pin holder (d) a fridge magnet
9. 9.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
10. 10.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a magnetic chess set
11. 11.True or false: a magnetic chess set works by magnetism. (a) False (b) True
12. 12.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
13. 13.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a magnetic pin holder
14. 14.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a mirror (d) a glass of water
15. 15.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) air pushing up (c) glue on the card (d) a magnet
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a battery cell (c) a glass of water (d) a towel
17. 17.True or false: a magnet is not needed for the card-on-a-glass trick. (a) False (b) True
18. 18.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a magnet (c) a mirror (d) a stiff postcard
19. 19.⚖️ 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) how full the glass is (d) the same card
20. 20.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) yeast (c) a mirror (d) a magnet
21. 21.True or false: a compass needle works by air pressure. (a) True (b) False
22. 22.⚖️ 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
23. 23.⚖️ 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 way we turn it (c) how full the glass is
24. 24.🧺 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 mirror (d) a sink or a bucket
25. 25.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a magnetic pin holder (d) a medicine dropper
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 measure it (b) we change it (c) we keep it the same
27. 27.True or false: a fridge magnet works by air pressure. (a) False (b) True
28. 28.⚖️ 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
29. 29.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
30. 30.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a sink or a bucket (c) a stiff postcard (d) a towel
31. 31.🥛 Does a magnetic pin holder work by air pressure or by magnetism? (a) magnetism (b) air pressure
32. 32.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a compass needle (c) a drinking straw (d) a magnetic chess set
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a glass of water (c) a magnet (d) a towel
34. 34.🥛 Does a suction hook work by air pressure or by magnetism? (a) air pressure (b) magnetism
35. 35.True or false: a medicine dropper works by magnetism. (a) True (b) False
36. 36.⚖️ 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 card (c) whether the card stays
37. 37.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.True or false: a bicycle pump works by air pressure. (a) False (b) True
39. 39.🥛 Which of these works by magnetism? (a) a bicycle pump (b) a suction hook (c) a medicine dropper (d) a compass needle
40. 40.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a bicycle pump (c) a compass needle (d) a medicine dropper

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