Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 150 · 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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) muddy water (d) turmeric powder
3. 3.⚖️ 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 change it (c) we measure it
4. 4.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
5. 5.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
6. 6.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) filtering (c) sieving (d) handpicking
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same glass (c) how clear the water is (d) the same muddy water
8. 8.True or false: husk from rice grain is done by winnowing. (a) True (b) False
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.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
11. 11.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a mirror (c) a funnel (d) sand and pebbles
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) sand and pebbles (d) cotton or cloth
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
20. 20.True or false: sugar from sugar water is done by winnowing. (a) True (b) False
21. 21.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) no, salt passes through (d) yes, all of it
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) a clean glass (d) sand and pebbles
23. 23.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) salt from sea water (c) small stones from dal (d) tea leaves from tea
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) sand and pebbles (d) cotton or cloth
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) the same funnel (d) the amount poured
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) sand and pebbles (d) a clean glass
27. 27.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) salt from sea water (c) bad grains from rice (d) gravel from fine sand
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
29. 29.⚖️ 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
30. 30.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
32. 32.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a magnet (d) a mirror
35. 35.🫗 How do we separate bran from wheat flour? (a) evaporating (b) winnowing (c) sieving (d) handpicking
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
37. 37.⚖️ 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
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) how clear the water is (c) the filter material
39. 39.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
40. 40.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) nothing is needed (d) lick your fingers

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