Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 411 · 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: how full the glass is is what we measure. (a) False (b) True
2. 2.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
3. 3.True or false: a suction hook works by magnetism. (a) False (b) True
4. 4.🔮 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
5. 5.🛟 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
6. 6.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a battery cell (d) a stiff postcard
7. 7.True or false: a magnet is needed for the card-on-a-glass trick. (a) False (b) True
8. 8.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) magnetism (b) air pressure
9. 9.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a magnet (c) a stiff postcard (d) a sink or a bucket
12. 12.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a balloon (d) a mirror
13. 13.⚖️ 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 glass (b) the same card (c) whether the card stays (d) the way we turn it
14. 14.True or false: a fridge magnet works by air pressure. (a) True (b) False
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a glass of water (d) a battery cell
16. 16.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) sand (c) smoke (d) water
17. 17.🥛 Which of these works by air pressure? (a) a drinking straw (b) a compass needle (c) a magnetic pin holder (d) a magnetic chess set
18. 18.True or false: a glass of water is needed for the card-on-a-glass trick. (a) False (b) True
19. 19.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.⚖️ 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 kept the same. (a) True (b) False
21. 21.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
22. 22.⚖️ 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 measure it (c) we change it
23. 23.🧺 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 battery cell (d) a towel
24. 24.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) air pressure (c) friction (d) magnetism
25. 25.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) a magnet (c) air pushing up (d) glue on the card
26. 26.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) turmeric powder (d) a stiff postcard
27. 27.🧺 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 towel (d) a mirror
28. 28.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a compass needle (c) a suction hook (d) a drinking straw
29. 29.🔍 Which is the odd one out? (a) a vacuum cleaner (b) a drinking straw (c) a bicycle pump (d) a fridge magnet
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a suction hook (c) a drinking straw (d) a vacuum cleaner
31. 31.⚖️ 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 change it (c) we keep it the same
32. 32.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
34. 34.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a compass needle (d) a bicycle pump
35. 35.⚖️ 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 keep it the same (c) we measure it
36. 36.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a magnetic chess set (d) a fridge magnet
37. 37.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
38. 38.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a magnetic pin holder (d) a medicine dropper
39. 39.True or false: a compass needle works by air pressure. (a) True (b) False
40. 40.⚖️ 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

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