Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 539 · 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.True or false: a medicine dropper works by air pressure. (a) True (b) False
2. 2.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) turmeric powder (c) a glass of water (d) yeast
3. 3.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.⚖️ 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 card (b) how full the glass is (c) the same glass (d) the way we turn it
6. 6.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
7. 7.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) on a bed (c) over a sink or bucket (d) over a laptop
8. 8.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? True or false: the same card is the one thing we change. (a) True (b) False
9. 9.🔮 Predict: you blow up a balloon. What fills it? (a) air (b) water (c) sand (d) smoke
10. 10.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
11. 11.📘 Air presses on everything around us. What is this push called? (a) sunlight (b) friction (c) air pressure (d) magnetism
12. 12.🥛 Which of these works by air pressure? (a) a suction hook (b) a compass needle (c) a magnetic chess set (d) a fridge magnet
13. 13.⚖️ 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
14. 14.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it will not break (c) it is hotter (d) it is heavier
15. 15.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
16. 16.⚖️ 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
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 sink or a bucket (c) yeast (d) a towel
18. 18.⚖️ 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 the one thing we change. (a) True (b) False
19. 19.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
20. 20.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) turmeric powder (c) a sink or a bucket (d) a stiff postcard
21. 21.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) not needed (b) needed
22. 22.🥛 Which of these works by magnetism? (a) a medicine dropper (b) a suction hook (c) a magnetic chess set (d) a vacuum cleaner
23. 23.🔍 Which is the odd one out? (a) a suction hook (b) a medicine dropper (c) a magnetic pin holder (d) a bicycle pump
24. 24.🧺 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 mirror (c) a glass of water (d) a stiff postcard
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a stiff postcard (d) a sink or a bucket
26. 26.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a balloon (c) a stiff postcard (d) a sink or a bucket
27. 27.🧺 Do we need a balloon for the card-on-a-glass trick? (a) needed (b) not needed
28. 28.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
29. 29.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.⚖️ 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 keep it the same (c) we measure it
31. 31.🥤 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
32. 32.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
33. 33.True or false: yeast is 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 glass of water (b) a sink or a bucket (c) a stiff postcard (d) a balloon
35. 35.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
36. 36.🥛 Which of these works by air pressure? (a) a magnetic pin holder (b) a fridge magnet (c) a bicycle pump (d) a compass needle
37. 37.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) water is hiding there (b) air inside pushes back (c) the bottle is magnetic (d) the cap is sticky
38. 38.🧺 Which of these is needed for the card-on-a-glass trick? (a) yeast (b) a towel (c) a magnet (d) turmeric powder
39. 39.🧺 Do we need a stiff postcard for the card-on-a-glass trick? (a) not needed (b) needed
40. 40.⚖️ 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

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