Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 926 · 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? Which of these is kept the same? (a) how clear the water is (b) the same muddy water (c) the filter material
2. 2.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) a magnet (d) yeast
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
5. 5.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
6. 6.⚖️ 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
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
8. 8.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) chaff from wheat grain (c) tea leaves from tea (d) bran from wheat flour
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, if it is cold (d) yes, always
10. 10.⚖️ 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) True (b) False
11. 11.⚖️ 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
12. 12.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
13. 13.⚖️ 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 change it (c) we keep it the same
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
15. 15.⚖️ 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) the same glass (c) the same funnel (d) the filter material
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
17. 17.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) evaporating (d) handpicking
18. 18.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bad grains from rice (c) sugar from sugar water (d) bran from wheat flour
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) muddy water (d) a clean glass
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
22. 22.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a funnel (d) a clean glass
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 measure it (c) we change it
25. 25.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
27. 27.True or false: tea leaves from tea is done by filtering. (a) True (b) False
28. 28.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
29. 29.⚖️ 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 amount poured (d) the filter material
30. 30.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sugar (c) yes, all of it (d) it turns to sand
31. 31.🫗 Which of these is done by winnowing? (a) mud from water (b) bran from wheat flour (c) husk from rice grain (d) salt from sea water
32. 32.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
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 filtering? (a) tea leaves from tea (b) salt from sea water (c) gravel from fine sand (d) small stones from dal
35. 35.⚖️ 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
36. 36.🫗 Which of these is done by evaporating? (a) salt from sea water (b) gravel from fine sand (c) tea leaves from tea (d) small stones from dal
37. 37.True or false: yeast is needed for the muddy water filter. (a) False (b) True
38. 38.True or false: mud from water is done by handpicking. (a) False (b) True
39. 39.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
40. 40.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) small stones from dal (d) mud from water

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