Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 584 · 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 vacuum cleaner (b) a drinking straw (c) a fridge magnet (d) a medicine dropper
2. 2.🔍 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 water turns to ice (d) the card stays on
3. 3.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a stiff postcard (b) a towel (c) a glass of water (d) yeast
4. 4.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a suction hook (c) a fridge magnet (d) a compass needle
5. 5.🧺 Which of these is needed for the card-on-a-glass trick? (a) a towel (b) a battery cell (c) a magnet (d) a balloon
6. 6.⚖️ 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 change it (c) we keep it the same
7. 7.🔮 Predict: you blow up a balloon. What fills it? (a) sand (b) air (c) smoke (d) water
8. 8.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) turmeric powder (c) a towel (d) a sink or a bucket
10. 10.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a sink or a bucket (c) a balloon (d) a glass of water
11. 11.True or false: a mirror is needed for the card-on-a-glass trick. (a) True (b) False
12. 12.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
13. 13.🧺 Which of these is needed for the card-on-a-glass trick? (a) a magnet (b) turmeric powder (c) a mirror (d) a sink or a bucket
14. 14.⚖️ 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) True (b) False
15. 15.True or false: yeast is not needed for the card-on-a-glass trick. (a) False (b) True
16. 16.⚖️ 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 glass (b) the same card (c) how full the glass is (d) the way we turn it
17. 17.⚖️ 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 the one thing we change. (a) False (b) True
18. 18.🧺 Do we need yeast for the card-on-a-glass trick? (a) needed (b) not needed
19. 19.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a stiff postcard (c) a glass of water (d) a battery cell
20. 20.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) needed (b) not needed
21. 21.🥛 Which of these works by magnetism? (a) a magnetic chess set (b) a suction hook (c) a drinking straw (d) a bicycle pump
22. 22.⚖️ 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 change it (b) we measure it (c) we keep it the same
23. 23.🥛 Which of these works by air pressure? (a) a compass needle (b) a magnetic chess set (c) a fridge magnet (d) a medicine dropper
24. 24.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a mirror (c) a battery cell (d) a glass of water
26. 26.⚖️ 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) False (b) True
27. 27.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
28. 28.🥛 Which of these works by air pressure? (a) a bicycle pump (b) a fridge magnet (c) a compass needle (d) a magnetic chess set
29. 29.True or false: a compass needle works by air pressure. (a) True (b) False
30. 30.⚖️ 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) the same glass (c) whether the card stays (d) the same card
31. 31.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a mirror (b) a towel (c) a sink or a bucket (d) a stiff postcard
32. 32.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.🥛 What holds the card up against the upside-down glass? (a) the cold water (b) glue on the card (c) air pushing up (d) a magnet
34. 34.True or false: a glass of water is not needed for the card-on-a-glass trick. (a) True (b) False
35. 35.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a magnet (c) a sink or a bucket (d) a glass of water
36. 36.True or false: a drinking straw works by air pressure. (a) False (b) True
37. 37.🥤 Why does juice go up a drinking straw when you sip? (a) juice likes plastic (b) the straw is magnetic (c) air pushes it up (d) the straw is hot
38. 38.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
39. 39.🧺 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 mirror (d) a stiff postcard
40. 40.True or false: a balloon is needed for the card-on-a-glass trick. (a) True (b) False

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