Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 995 · 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.🧺 Do we need yeast for the card-on-a-glass trick? (a) not needed (b) needed
2. 2.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
3. 3.🥛 Which of these works by magnetism? (a) a drinking straw (b) a bicycle pump (c) a fridge magnet (d) a vacuum cleaner
4. 4.🛟 Where should you do the card-and-glass trick? (a) over a sink or bucket (b) on a bed (c) near a plug point (d) over a laptop
5. 5.True or false: a stiff postcard is not needed for the card-on-a-glass trick. (a) True (b) False
6. 6.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) turmeric powder (b) a towel (c) a sink or a bucket (d) a glass of water
7. 7.🥛 Does a bicycle pump work by air pressure or by magnetism? (a) air pressure (b) magnetism
8. 8.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
9. 9.⚖️ 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) the same card (c) whether the card stays (d) how full the glass is
10. 10.🧺 Which of these is needed for the card-on-a-glass trick? (a) a mirror (b) a battery cell (c) a balloon (d) a sink or a bucket
11. 11.⚖️ 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) whether the card stays (b) the way we turn it (c) the same glass (d) how full the glass is
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 the one thing we change. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a compass needle (d) a drinking straw
14. 14.⚖️ 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
15. 15.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) True (b) False
16. 16.True or false: a compass needle works by air pressure. (a) False (b) True
17. 17.⚖️ 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 measure it (b) we change it (c) we keep it the same
18. 18.🔍 Which is the odd one out? (a) a medicine dropper (b) a suction hook (c) a bicycle pump (d) a magnetic chess set
19. 19.True or false: a bicycle pump works by magnetism. (a) True (b) False
20. 20.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
21. 21.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) yeast (b) a stiff postcard (c) a glass of water (d) a sink or a bucket
22. 22.🔮 Why do we try the card trick over a sink or a bucket? (a) to cool the glass (b) to make it rain (c) to grow plants (d) to catch any spills
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a battery cell (b) a towel (c) a sink or a bucket (d) a glass of water
24. 24.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a stiff postcard (b) a towel (c) a sink or a bucket (d) a battery cell
26. 26.🥛 Which of these works by air pressure? (a) a fridge magnet (b) a magnetic chess set (c) a compass needle (d) a bicycle pump
27. 27.⚖️ 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
28. 28.True or false: a fridge magnet works by air pressure. (a) True (b) False
29. 29.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
30. 30.🔍 Which is the odd one out? (a) a fridge magnet (b) a magnetic chess set (c) a bicycle pump (d) a compass needle
31. 31.True or false: a suction hook works by magnetism. (a) False (b) True
32. 32.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a drinking straw (d) a compass needle
33. 33.True or false: a towel is needed for the card-on-a-glass trick. (a) False (b) True
34. 34.🥛 Does a compass needle work by air pressure or by magnetism? (a) magnetism (b) air pressure
35. 35.True or false: a towel is not needed for the card-on-a-glass trick. (a) False (b) True
36. 36.🧺 Do we need a towel for the card-on-a-glass trick? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) turmeric powder (d) a sink or a bucket
38. 38.🥛 Which of these works by air pressure? (a) a compass needle (b) a suction hook (c) a fridge magnet (d) a magnetic chess set
39. 39.🧺 Which of these is needed for the card-on-a-glass trick? (a) a balloon (b) a glass of water (c) yeast (d) a battery cell
40. 40.True or false: yeast is needed for the card-on-a-glass trick. (a) True (b) False

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids