Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 395 · 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 is the odd one out? (a) a medicine dropper (b) a suction hook (c) a drinking straw (d) a compass needle
2. 2.True or false: a suction hook works by air pressure. (a) False (b) True
3. 3.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
4. 4.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
5. 5.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.True or false: a bicycle pump works by air pressure. (a) True (b) False
7. 7.True or false: a fridge magnet works by magnetism. (a) True (b) False
8. 8.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
9. 9.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) the card gets wet (c) little air left inside (d) it looks nicer
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a battery cell (c) yeast (d) turmeric powder
11. 11.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
12. 12.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
13. 13.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a towel
15. 15.⚖️ 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
16. 16.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a magnet (c) a sink or a bucket (d) a stiff postcard
17. 17.🔮 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
18. 18.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) water is hiding there (c) air inside pushes back (d) the bottle is magnetic
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
21. 21.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
22. 22.True or false: turmeric powder is needed for the card-on-a-glass trick. (a) False (b) True
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) yeast (d) a glass of water
24. 24.True or false: a fridge magnet works by air pressure. (a) True (b) False
25. 25.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
26. 26.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) the cold water (c) a magnet (d) glue on the card
27. 27.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.⚖️ 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) False (b) True
29. 29.True or false: a medicine dropper works by magnetism. (a) False (b) True
30. 30.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a stiff postcard (c) a mirror (d) a magnet
32. 32.🥛 Which of these works by magnetism? (a) a suction hook (b) a vacuum cleaner (c) a fridge magnet (d) a bicycle pump
33. 33.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) sunlight (d) air pressure
34. 34.🔍 Which is the odd one out? (a) a fridge magnet (b) a suction hook (c) a vacuum cleaner (d) a medicine dropper
35. 35.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
36. 36.⚖️ 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) whether the card stays (b) the same card (c) how full the glass is (d) the same glass
37. 37.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
38. 38.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a mirror (c) a glass of water (d) a towel
39. 39.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a balloon (d) a glass of water
40. 40.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) magnetism (b) air pressure

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