Air Pressure Experiment Worksheet

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

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