Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 356 · 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.🥤 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
2. 2.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a battery cell (d) a stiff postcard
3. 3.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) water is hiding there (c) the cap is sticky (d) air inside pushes back
4. 4.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) True (b) False
5. 5.🥛 Which of these works by magnetism? (a) a drinking straw (b) a suction hook (c) a magnetic pin holder (d) a vacuum cleaner
6. 6.🥛 Does a vacuum cleaner work by air pressure or by magnetism? (a) air pressure (b) magnetism
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 same card”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.⚖️ 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) how full the glass is (b) the way we turn it (c) whether the card stays (d) the same glass
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a balloon (c) a sink or a bucket (d) a glass of water
11. 11.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a magnet (c) a glass of water (d) a towel
12. 12.True or false: a mirror is not needed for the card-on-a-glass trick. (a) True (b) False
13. 13.🥛 Which of these works by air pressure? (a) a vacuum cleaner (b) a fridge magnet (c) a compass needle (d) a magnetic pin holder
14. 14.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a sink or a bucket (c) a stiff postcard (d) a magnet
15. 15.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
16. 16.True or false: a suction hook works by magnetism. (a) True (b) False
17. 17.⚖️ 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 glass (b) how full the glass is (c) whether the card stays
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 the one thing we change. (a) True (b) False
19. 19.⚖️ 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
20. 20.🛟 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
21. 21.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) False (b) True
22. 22.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
23. 23.⚖️ 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 the one thing we change. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) a compass needle (b) a medicine dropper (c) a magnetic chess set (d) a fridge magnet
25. 25.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) not needed (b) needed
26. 26.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
27. 27.🔍 Which is the odd one out? (a) a medicine dropper (b) a drinking straw (c) a suction hook (d) a fridge magnet
28. 28.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a stiff postcard (c) a towel (d) a glass of water
29. 29.⚖️ 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
30. 30.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
31. 31.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) air (d) sand
32. 32.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.⚖️ 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 keep it the same (b) we change it (c) we measure it
34. 34.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) yeast (c) a battery cell (d) a glass of water
35. 35.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a sink or a bucket (c) a towel (d) a mirror
36. 36.🥛 Why is it best to fill the glass right to the top? (a) water is heavier (b) it looks nicer (c) little air left inside (d) the card gets wet
37. 37.⚖️ 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 way we turn it
38. 38.🔍 Which is the odd one out? (a) a magnetic chess set (b) a drinking straw (c) a compass needle (d) a fridge magnet
39. 39.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a sink or a bucket (d) yeast
40. 40.⚖️ 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 keep it the same (c) we measure it

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