Air Pressure Experiment Worksheet

Science experiments lesson 6: Air pressure: the card on a glass · Set 883 · 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 magnetic chess set (b) a fridge magnet (c) a compass needle (d) a vacuum cleaner
2. 2.🔍 Which is the odd one out? (a) a magnetic chess set (b) a vacuum cleaner (c) a medicine dropper (d) a suction hook
3. 3.🧺 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) turmeric powder (d) a glass of water
4. 4.⚖️ 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 way we turn it (b) the same card (c) how full the glass is (d) the same glass
5. 5.🥛 What holds the card up against the upside-down glass? (a) air pushing up (b) glue on the card (c) the cold water (d) a magnet
6. 6.True or false: turmeric powder is not needed for the card-on-a-glass trick. (a) False (b) True
7. 7.🔮 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
8. 8.⚖️ 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 measure it (c) we keep it the same
9. 9.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a glass of water (b) a stiff postcard (c) a towel (d) a battery cell
10. 10.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
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.🧺 Which of these is needed for the card-on-a-glass trick? (a) turmeric powder (b) a magnet (c) a balloon (d) a sink or a bucket
13. 13.🧺 Which of these is not needed for the card-on-a-glass trick? (a) a glass of water (b) a battery cell (c) a sink or a bucket (d) a stiff postcard
14. 14.⚖️ 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
15. 15.🧺 Do we need a battery cell for the card-on-a-glass trick? (a) needed (b) not needed
16. 16.True or false: a sink or a bucket is needed for the card-on-a-glass trick. (a) False (b) True
17. 17.🧺 Do we need a towel for the card-on-a-glass trick? (a) not needed (b) needed
18. 18.🥛 Why is it best to fill the glass right to the top? (a) the card gets wet (b) little air left inside (c) water is heavier (d) it looks nicer
19. 19.🧺 Do we need a glass of water for the card-on-a-glass trick? (a) needed (b) not needed
20. 20.True or false: a battery cell is needed for the card-on-a-glass trick. (a) False (b) True
21. 21.True or false: a magnetic pin holder works by magnetism. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a towel (b) a balloon (c) a glass of water (d) a stiff postcard
24. 24.📘 Air presses on everything around us. What is this push called? (a) magnetism (b) air pressure (c) sunlight (d) friction
25. 25.🧺 Which of these is needed for the card-on-a-glass trick? (a) a stiff postcard (b) yeast (c) a magnet (d) a mirror
26. 26.⚖️ 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) how full the glass is (b) the same glass (c) whether the card stays
27. 27.🔍 Which is the odd one out? (a) a medicine dropper (b) a vacuum cleaner (c) a compass needle (d) a bicycle pump
28. 28.🔮 Predict: you blow up a balloon. What fills it? (a) smoke (b) water (c) sand (d) air
29. 29.True or false: a towel is not needed for the card-on-a-glass trick. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a magnetic pin holder (b) a drinking straw (c) a medicine dropper (d) a bicycle pump
31. 31.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a stiff postcard (c) a towel (d) a glass of water
32. 32.🧺 Do we need a magnet for the card-on-a-glass trick? (a) needed (b) not needed
33. 33.🧺 Do we need turmeric powder for the card-on-a-glass trick? (a) not needed (b) needed
34. 34.True or false: a stiff postcard is needed for the card-on-a-glass trick. (a) True (b) False
35. 35.⚖️ 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 keep it the same (b) we measure it (c) we change it
36. 36.🔍 Which is the odd one out? (a) a fridge magnet (b) a drinking straw (c) a vacuum cleaner (d) a medicine dropper
37. 37.True or false: a mirror is not needed for the card-on-a-glass trick. (a) False (b) True
38. 38.True or false: a medicine dropper works by magnetism. (a) False (b) True
39. 39.🥛 Does a medicine dropper work by air pressure or by magnetism? (a) magnetism (b) air pressure
40. 40.True or false: a battery cell is not needed for the card-on-a-glass trick. (a) False (b) True

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