Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 347 · 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 needed for the card-on-a-glass trick? (a) turmeric powder (b) yeast (c) a balloon (d) a sink or a bucket
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a magnet
3. 3.⚖️ 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 measure it (b) we keep it the same (c) we change it
4. 4.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a drinking straw (d) a compass needle
6. 6.True or false: a medicine dropper works by magnetism. (a) True (b) False
7. 7.⚖️ 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 glass (c) how full the glass is
8. 8.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
9. 9.🧺 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) a stiff postcard (d) a battery cell
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a balloon (c) a battery cell (d) a towel
11. 11.🧺 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) turmeric powder
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) a balloon
13. 13.🛟 Where should you do the card-and-glass trick? (a) over a laptop (b) over a sink or bucket (c) near a plug point (d) on a bed
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) whether the card stays (b) how full the glass is (c) the same card
15. 15.🔍 Which is the odd one out? (a) a bicycle pump (b) a magnetic pin holder (c) a suction hook (d) a medicine dropper
16. 16.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is hotter (c) it is heavier (d) it is magnetic
17. 17.🧺 Which of these is needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a battery cell (d) a magnet
18. 18.🧺 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) a mirror
19. 19.⚖️ 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
20. 20.True or false: a suction hook works by air pressure. (a) True (b) False
21. 21.⚖️ 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
22. 22.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
23. 23.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
24. 24.⚖️ 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) True (b) False
25. 25.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is the one thing we change. (a) True (b) False
26. 26.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
27. 27.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
28. 28.🔍 Which is the odd one out? (a) a compass needle (b) a magnetic pin holder (c) a medicine dropper (d) a fridge magnet
29. 29.🧺 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) a stiff postcard (d) yeast
30. 30.🔍 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 card stays on (c) the glass breaks (d) the water turns to ice
31. 31.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
32. 32.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic pin holder (c) a magnetic chess set (d) a medicine dropper
33. 33.🥤 Why does juice go up a drinking straw when you sip? (a) air pushes it up (b) the straw is hot (c) the straw is magnetic (d) juice likes plastic
34. 34.🔮 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 grow plants (d) to catch any spills
35. 35.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a compass needle (c) a magnetic pin holder (d) a bicycle pump
36. 36.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) False (b) True
37. 37.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
38. 38.⚖️ 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 kept the same. (a) False (b) True
39. 39.⚖️ 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
40. 40.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) the bottle is magnetic (c) the cap is sticky (d) water is hiding there

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