Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 930 · 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 fridge magnet (b) a suction hook (c) a vacuum cleaner (d) a bicycle pump
2. 2.🔮 Predict: you blow up a balloon. What fills it? (a) water (b) air (c) smoke (d) sand
3. 3.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to make it rain (c) to cool the glass (d) to catch any spills
4. 4.⚖️ 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) how full the glass is (b) the same card (c) whether the card stays (d) the same glass
5. 5.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
6. 6.⚖️ 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) how full the glass is (c) whether the card stays (d) the same glass
7. 7.📘 Air presses on everything around us. What is this push called? (a) friction (b) sunlight (c) magnetism (d) air pressure
8. 8.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the cap is sticky (b) air inside pushes back (c) water is hiding there (d) the bottle is magnetic
9. 9.True or false: a magnetic chess set works by magnetism. (a) False (b) True
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) yeast (c) a battery cell (d) a stiff postcard
11. 11.True or false: a stiff postcard 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
14. 14.⚖️ 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
15. 15.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
16. 16.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a stiff postcard
17. 17.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a towel (c) a glass of water (d) turmeric powder
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a magnet (b) a sink or a bucket (c) a glass of water (d) a towel
20. 20.True or false: a vacuum cleaner works by air pressure. (a) False (b) True
21. 21.🥛 Which of these works by magnetism? (a) a suction hook (b) a drinking straw (c) a compass needle (d) a medicine dropper
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 way we turn it (c) whether the card stays
23. 23.🧺 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 stiff postcard (d) turmeric powder
24. 24.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a towel (d) a sink or a bucket
25. 25.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a magnetic chess set (c) a fridge magnet (d) a compass needle
26. 26.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is magnetic (b) the straw is hot (c) juice likes plastic (d) air pushes it up
29. 29.⚖️ 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
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a sink or a bucket (d) yeast
32. 32.⚖️ 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 glass
33. 33.🥛 Does a fridge magnet work by air pressure or by magnetism? (a) air pressure (b) magnetism
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.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a sink or a bucket (b) a glass of water (c) yeast (d) a stiff postcard
36. 36.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
37. 37.True or false: a fridge magnet works by magnetism. (a) True (b) False
38. 38.True or false: a towel is needed for the card-on-a-glass trick. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed

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