Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 655 · 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 mirror is not needed for the card-on-a-glass trick. (a) True (b) False
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.⚖️ 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
4. 4.🔮 Why do we try the card trick over a sink or a bucket? (a) to grow plants (b) to catch any spills (c) to cool the glass (d) to make it rain
5. 5.🥛 Does a suction hook work by air pressure or by magnetism? (a) magnetism (b) air pressure
6. 6.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
7. 7.🧺 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 stiff postcard (c) a balloon (d) a towel
8. 8.🔍 Which is the odd one out? (a) a bicycle pump (b) a fridge magnet (c) a magnetic chess set (d) a magnetic pin holder
9. 9.True or false: a drinking straw works by magnetism. (a) True (b) False
10. 10.True or false: a glass of water is needed for the card-on-a-glass trick. (a) True (b) False
11. 11.🔮 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
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🔍 Which is the odd one out? (a) a drinking straw (b) a bicycle pump (c) a medicine dropper (d) a magnetic pin holder
14. 14.🧺 Do we need a mirror for the card-on-a-glass trick? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a balloon (c) a glass of water (d) a battery cell
16. 16.🔍 You turn the full glass upside down, holding the card, then let go of the card. What happens? (a) the card stays on (b) the water turns to ice (c) the card flies away (d) the glass breaks
17. 17.🥛 What holds the card up against the upside-down glass? (a) a magnet (b) glue on the card (c) the cold water (d) air pushing up
18. 18.🥛 Does a magnetic chess set work by air pressure or by magnetism? (a) air pressure (b) magnetism
19. 19.True or false: a magnetic pin holder works by air pressure. (a) True (b) False
20. 20.True or false: a vacuum cleaner works by magnetism. (a) False (b) True
21. 21.🧺 Do we need a sink or a bucket for the card-on-a-glass trick? (a) needed (b) not needed
22. 22.🛟 Where should you do the card-and-glass trick? (a) near a plug point (b) over a sink or bucket (c) over a laptop (d) on a bed
23. 23.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a towel (b) a glass of water (c) a magnet (d) a sink or a bucket
24. 24.🥛 Does a drinking straw work by air pressure or by magnetism? (a) air pressure (b) magnetism
25. 25.🥛 Which of these works by air pressure? (a) a suction hook (b) a fridge magnet (c) a magnetic pin holder (d) a magnetic chess set
26. 26.🔍 Which is the odd one out? (a) a compass needle (b) a drinking straw (c) a bicycle pump (d) a vacuum cleaner
27. 27.🥛 Which of these works by magnetism? (a) a suction hook (b) a bicycle pump (c) a compass needle (d) a vacuum cleaner
28. 28.⚖️ 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 measure it (c) we change it
29. 29.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is magnetic (b) it is heavier (c) it will not break (d) it is hotter
30. 30.True or false: yeast is not needed for the card-on-a-glass trick. (a) True (b) False
31. 31.🥛 Which of these works by magnetism? (a) a suction hook (b) a medicine dropper (c) a bicycle pump (d) a magnetic pin holder
32. 32.🔍 Which is the odd one out? (a) a suction hook (b) a magnetic chess set (c) a medicine dropper (d) a vacuum cleaner
33. 33.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a towel (c) turmeric powder (d) a sink or a bucket
34. 34.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a towel (c) a stiff postcard (d) a mirror
35. 35.⚖️ 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) whether the card stays (c) the same card (d) how full the glass is
36. 36.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a magnetic pin holder (d) a compass needle
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.True or false: a drinking straw works by air pressure. (a) False (b) True
39. 39.True or false: a fridge magnet works by air pressure. (a) False (b) True
40. 40.⚖️ 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) whether the card stays (c) how full the glass is (d) the same glass

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