Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 4 · 40 questions

What you do (Choose the right way): 1. Put cotton or cloth in the funnel, then layers of sand and small pebbles. 2. Stand the funnel in a clean glass. 3. Pour muddy water in slowly and watch what drips out. 4. Compare the colour before and after — never drink it — and wash your hands.

1. 1.True or false: small stones from dal is done by handpicking. (a) True (b) False
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
3. 3.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
4. 4.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) small stones from dal (c) bran from wheat flour (d) sugar from sugar water
5. 5.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
6. 6.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
7. 7.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
9. 9.🫗 Which of these is done by winnowing? (a) salt from sea water (b) tea leaves from tea (c) mud from water (d) chaff from wheat grain
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) a funnel (d) a mirror
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
12. 12.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) muddy water (c) sand and pebbles (d) a clean glass
14. 14.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) a funnel (d) a balloon
16. 16.True or false: gravel from fine sand is done by sieving. (a) True (b) False
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) turmeric powder (c) cotton or cloth (d) muddy water
18. 18.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
19. 19.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
20. 20.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
21. 21.🫗 Which of these is done by handpicking? (a) salt from sea water (b) mud from water (c) small stones from dal (d) bran from wheat flour
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
23. 23.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the filter material (c) the same funnel
27. 27.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a mirror (c) cotton or cloth (d) a clean glass
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the filter material (c) the same muddy water (d) how clear the water is
30. 30.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
34. 34.🫗 How do we separate sugar from sugar water? (a) sieving (b) evaporating (c) winnowing (d) handpicking
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a magnet (d) a funnel
36. 36.🫗 How do we separate bad grains from rice? (a) sieving (b) filtering (c) evaporating (d) handpicking
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) a funnel (d) cotton or cloth
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
40. 40.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a mirror (d) muddy water

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