Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 818 · 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) muddy water (b) a clean glass (c) a balloon (d) cotton or cloth
2. 2.🫗 Which of these is done by filtering? (a) bad grains from rice (b) mud from water (c) small stones from dal (d) husk from rice grain
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a magnet (d) a funnel
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
6. 6.⚖️ 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 muddy water
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a funnel (d) a mirror
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) hot (d) salty
10. 10.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
11. 11.🔮 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
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the salt (d) the mud
14. 14.⚖️ 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 muddy water (b) how clear the water is (c) the filter material (d) the same funnel
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) how clear the water is (c) the filter material
16. 16.🫗 How do we separate small stones from dal? (a) filtering (b) winnowing (c) evaporating (d) handpicking
17. 17.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) a clean glass (d) a funnel
20. 20.🫗 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
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
22. 22.🫗 Which of these is done by winnowing? (a) small stones from dal (b) mud from water (c) chaff from wheat grain (d) gravel from fine sand
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a battery cell (d) a funnel
24. 24.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) filtering (d) winnowing
25. 25.True or false: husk from rice grain is done by handpicking. (a) True (b) False
26. 26.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.⚖️ 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) how clear the water is (c) the filter material (d) the same muddy water
29. 29.True or false: salt from sea water is done by evaporating. (a) False (b) True
30. 30.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
31. 31.True or false: bad grains from rice is done by handpicking. (a) False (b) True
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
33. 33.⚖️ 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) False (b) True
34. 34.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
35. 35.True or false: small stones from dal is done by handpicking. (a) True (b) False
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) sand and pebbles (d) cotton or cloth
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
38. 38.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) gravel from fine sand (c) bran from wheat flour (d) sugar from sugar water
39. 39.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) handpicking (d) evaporating
40. 40.True or false: chaff from wheat grain is done by sieving. (a) False (b) True

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