Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 808 · 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.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
2. 2.⚖️ 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 same muddy water (d) the amount poured
3. 3.🛟 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
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) yeast (c) a clean glass (d) a funnel
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a mirror (d) sand and pebbles
6. 6.⚖️ 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
7. 7.⚖️ 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
8. 8.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
9. 9.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the salt (d) the water
10. 10.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the same funnel (c) the same glass (d) the filter material
12. 12.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
13. 13.True or false: salt from sea water is done by filtering. (a) True (b) False
14. 14.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
15. 15.⚖️ 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 amount poured (c) the filter material
16. 16.⚖️ 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
17. 17.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) salt from sea water (c) bad grains from rice (d) chaff from wheat grain
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
19. 19.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
20. 20.True or false: tea leaves from tea is done by filtering. (a) False (b) True
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a funnel (d) a balloon
23. 23.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) small stones from dal (c) gravel from fine sand (d) salt from sea water
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) cotton or cloth (d) a clean glass
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🫗 Which of these is done by sieving? (a) small stones from dal (b) chaff from wheat grain (c) bad grains from rice (d) bran from wheat flour
27. 27.🔮 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
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a magnet (c) muddy water (d) a funnel
29. 29.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a clean glass (c) a magnet (d) turmeric powder
30. 30.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
31. 31.🫗 How do we separate tea leaves from tea? (a) handpicking (b) filtering (c) evaporating (d) winnowing
32. 32.⚖️ 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
33. 33.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
34. 34.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) gravel from fine sand (c) sugar from sugar water (d) chaff from wheat grain
35. 35.🫗 How do we separate mud from water? (a) sieving (b) winnowing (c) filtering (d) handpicking
36. 36.🔍 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
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same muddy water (c) how clear the water is
38. 38.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
39. 39.🫗 Which of these is done by evaporating? (a) salt from sea water (b) tea leaves from tea (c) mud from water (d) gravel from fine sand
40. 40.🫗 Which of these is done by handpicking? (a) salt from sea water (b) husk from rice grain (c) bad grains from rice (d) chaff from wheat grain

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