Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 913 · 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: the same glass is kept the same. (a) False (b) True
2. 2.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
3. 3.⚖️ 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) the same card (b) how full the glass is (c) whether the card stays
4. 4.True or false: a medicine dropper works by magnetism. (a) False (b) True
5. 5.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
6. 6.🥤 Why does juice go up a drinking straw when you sip? (a) the straw is hot (b) air pushes it up (c) the straw is magnetic (d) juice likes plastic
7. 7.⚖️ 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) how full the glass is (c) the same card (d) the same glass
8. 8.⚖️ 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 keep it the same (c) we measure it
9. 9.🔍 Which is the odd one out? (a) a bicycle pump (b) a medicine dropper (c) a fridge magnet (d) a suction hook
10. 10.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
11. 11.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) turmeric powder (c) a glass of water (d) yeast
12. 12.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a stiff postcard (c) a towel (d) turmeric powder
13. 13.🧺 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 stiff postcard (c) a towel (d) a battery cell
14. 14.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a compass needle (b) a fridge magnet (c) a bicycle pump (d) a magnetic pin holder
16. 16.🧺 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 towel (d) a sink or a bucket
17. 17.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
18. 18.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) the cold water (c) air pushing up (d) glue on the card
19. 19.True or false: a balloon is not needed for the card-on-a-glass trick. (a) True (b) False
20. 20.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a laptop (c) over a sink or bucket (d) on a bed
21. 21.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
22. 22.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) turmeric powder (d) a mirror
23. 23.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a magnetic pin holder (d) a bicycle pump
24. 24.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) sand (c) air (d) water
25. 25.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
26. 26.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
27. 27.⚖️ 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 way we turn it (b) whether the card stays (c) how full the glass is (d) the same glass
28. 28.True or false: a compass needle works by air pressure. (a) False (b) True
29. 29.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) a battery cell (c) a magnet (d) a balloon
30. 30.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) magnetism (c) air pressure (d) friction
31. 31.🔍 Which is the odd one out? (a) a magnetic chess set (b) a magnetic pin holder (c) a compass needle (d) a medicine dropper
32. 32.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to make it rain (d) to cool the glass
33. 33.🛟 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 hotter (d) it is magnetic
34. 34.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) air inside pushes back (c) water is hiding there (d) the cap is sticky
35. 35.⚖️ 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 measure it (b) we change it (c) we keep it the same
36. 36.🧺 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 stiff postcard
37. 37.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
38. 38.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.True or false: a balloon is needed for the card-on-a-glass trick. (a) False (b) True
40. 40.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) magnetism (b) air pressure

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