Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 323 · 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 of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a mirror (d) a stiff postcard
2. 2.⚖️ 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
3. 3.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a drinking straw (d) a vacuum cleaner
4. 4.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic chess set (d) a compass needle
5. 5.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is heavier (c) it is magnetic (d) it is hotter
6. 6.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
7. 7.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) juice likes plastic (c) the straw is hot (d) air pushes it up
8. 8.🧺 Which of these is needed for the card-on-a-glass trick? (a) a battery cell (b) a stiff postcard (c) yeast (d) turmeric powder
9. 9.⚖️ 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 same card (c) how full the glass is
10. 10.🧺 Do we need a magnet for the card-on-a-glass trick? (a) not needed (b) needed
11. 11.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) yeast (b) a glass of water (c) a sink or a bucket (d) a towel
13. 13.⚖️ 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 measure it (c) we change it
14. 14.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) a mirror (c) a balloon (d) yeast
16. 16.⚖️ 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 card (b) the way we turn it (c) the same glass (d) how full the glass is
17. 17.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) smoke (c) water (d) sand
18. 18.🥛 Which of these works by magnetism? (a) a compass needle (b) a medicine dropper (c) a suction hook (d) a bicycle pump
19. 19.⚖️ 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 way we turn it
20. 20.🔍 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 glass breaks (c) the water turns to ice (d) the card stays on
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a sink or a bucket (d) a glass of water
22. 22.True or false: a magnetic chess set works by magnetism. (a) True (b) False
23. 23.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a sink or a bucket (d) a glass of water
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) a battery cell (c) yeast (d) a towel
26. 26.📘 Air presses on everything around us. What is this push called? (a) friction (b) magnetism (c) air pressure (d) sunlight
27. 27.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) water is hiding there (d) air inside pushes back
28. 28.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) False (b) True
29. 29.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a bicycle pump (c) a medicine dropper (d) a suction hook
30. 30.🔍 Which is the odd one out? (a) a drinking straw (b) a magnetic chess set (c) a suction hook (d) a medicine dropper
31. 31.🔍 Which is the odd one out? (a) a drinking straw (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
32. 32.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
33. 33.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
34. 34.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) a suction hook (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
36. 36.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is kept the same. (a) False (b) True
37. 37.True or false: a magnetic chess set works by air pressure. (a) True (b) False
38. 38.🧺 Do we need a balloon for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a towel (d) a balloon
40. 40.True or false: a drinking straw works by magnetism. (a) True (b) False

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