Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 880 · 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 the one thing we change. (a) False (b) True
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 measure it (b) we keep it the same (c) we change it
3. 3.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is what we measure. (a) False (b) True
4. 4.🛟 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
5. 5.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
6. 6.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same glass is what we measure. (a) True (b) False
7. 7.⚖️ 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 measure it (c) we keep it the same
8. 8.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
9. 9.⚖️ 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 kept the same. (a) False (b) True
10. 10.⚖️ 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 same glass (b) how full the glass is (c) the same card (d) whether the card stays
11. 11.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
12. 12.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is kept the same. (a) True (b) False
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a glass of water (c) a mirror (d) a sink or a bucket
14. 14.🔮 Why do we try the card trick over a sink or a bucket? (a) to make it rain (b) to catch any spills (c) to grow plants (d) to cool the glass
15. 15.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
16. 16.True or false: a balloon is not needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a battery cell (c) a stiff postcard (d) a sink or a bucket
18. 18.📘 Air presses on everything around us. What is this push called? (a) air pressure (b) sunlight (c) friction (d) magnetism
19. 19.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) air inside pushes back (b) water is hiding there (c) the bottle is magnetic (d) the cap is sticky
20. 20.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
21. 21.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a mirror (c) a stiff postcard (d) turmeric powder
22. 22.⚖️ 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 kept the same. (a) False (b) True
23. 23.True or false: a bicycle pump works by magnetism. (a) True (b) False
24. 24.🛟 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 magnetic (d) it is heavier
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 kept the same. (a) True (b) False
26. 26.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a balloon
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.🥛 Which of these works by magnetism? (a) a vacuum cleaner (b) a suction hook (c) a bicycle pump (d) a fridge magnet
29. 29.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the glass breaks (b) the card flies away (c) the card stays on (d) the water turns to ice
30. 30.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) smoke (c) water (d) air
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a sink or a bucket (b) a stiff postcard (c) a battery cell (d) a towel
32. 32.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
33. 33.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a magnet (c) a towel (d) a sink or a bucket
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a sink or a bucket (c) a magnet (d) a stiff postcard
36. 36.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a magnet (c) a sink or a bucket (d) turmeric powder
37. 37.🔍 Which is the odd one out? (a) a bicycle pump (b) a suction hook (c) a magnetic pin holder (d) a vacuum cleaner
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a compass needle (c) a bicycle pump (d) a fridge magnet
39. 39.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) the straw is hot (d) air pushes it up
40. 40.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure

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