Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 148 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a balloon (d) muddy water
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we change it (c) we keep it the same
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) turmeric powder (d) cotton or cloth
4. 4.🫗 How do we separate bad grains from rice? (a) filtering (b) winnowing (c) sieving (d) handpicking
5. 5.True or false: small stones from dal is done by handpicking. (a) False (b) True
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) yeast (c) cotton or cloth (d) a clean glass
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a magnet (d) muddy water
8. 8.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is sweet (d) clear water is salty
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
10. 10.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
12. 12.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same funnel (c) the filter material (d) how clear the water is
14. 14.🫗 How do we separate husk from rice grain? (a) winnowing (b) filtering (c) sieving (d) handpicking
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
18. 18.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
21. 21.🫗 Which of these is done by sieving? (a) husk from rice grain (b) sugar from sugar water (c) bad grains from rice (d) gravel from fine sand
22. 22.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
23. 23.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) cotton or cloth (d) turmeric powder
24. 24.⚖️ 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
25. 25.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
26. 26.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) yeast (d) a funnel
27. 27.🔮 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
28. 28.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) mud from water (c) sugar from sugar water (d) bad grains from rice
29. 29.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
30. 30.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
31. 31.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) mud from water (c) salt from sea water (d) chaff from wheat grain
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same glass (b) the same muddy water (c) the filter material (d) the same funnel
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
34. 34.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
36. 36.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
38. 38.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
39. 39.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
40. 40.🫗 How do we separate bran from wheat flour? (a) winnowing (b) handpicking (c) sieving (d) filtering

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