Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 890 · 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) turmeric powder (b) muddy water (c) a clean glass (d) a funnel
2. 2.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the filter material (c) how clear the water is (d) the same muddy water
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) sand and pebbles (d) muddy water
5. 5.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bran from wheat flour (c) gravel from fine sand (d) small stones from dal
6. 6.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
7. 7.⚖️ 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) True (b) False
8. 8.🫗 How do we separate gravel from fine sand? (a) filtering (b) winnowing (c) sieving (d) handpicking
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
11. 11.⚖️ 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
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.⚖️ 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
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
15. 15.⚖️ 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
16. 16.True or false: bran from wheat flour is done by sieving. (a) False (b) True
17. 17.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) husk from rice grain (c) tea leaves from tea (d) mud from water
18. 18.True or false: tea leaves from tea is done by filtering. (a) False (b) True
19. 19.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) cotton or cloth (d) a funnel
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the amount poured (d) the same muddy water
22. 22.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) handpicking (d) winnowing
23. 23.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
24. 24.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
25. 25.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: chaff from wheat grain is done by sieving. (a) False (b) True
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) cotton or cloth (d) a magnet
30. 30.🫗 How do we separate husk from rice grain? (a) evaporating (b) winnowing (c) handpicking (d) sieving
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
33. 33.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
34. 34.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
35. 35.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
36. 36.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) winnowing (d) evaporating
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we change it (c) we keep it the same

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