Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 708 · 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.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a mirror (d) muddy water
2. 2.🔍 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 sinks to the bottom (d) it dissolves
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the filter material (c) the same muddy water (d) how clear the water is
4. 4.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) turmeric powder (d) cotton or cloth
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a mirror (d) muddy water
9. 9.True or false: husk from rice grain is done by winnowing. (a) False (b) True
10. 10.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
11. 11.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) salt from sea water (c) gravel from fine sand (d) husk from rice grain
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) muddy water (c) a clean glass (d) a funnel
14. 14.True or false: yeast is needed for the muddy water filter. (a) True (b) False
15. 15.🛟 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
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
17. 17.⚖️ 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) False (b) True
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a battery cell (d) a funnel
19. 19.⚖️ 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 funnel (c) how clear the water is (d) the same muddy water
20. 20.True or false: husk from rice grain is done by evaporating. (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 filter material”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) small stones from dal (c) salt from sea water (d) mud from water
23. 23.⚖️ 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) True (b) False
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 measure it (b) we keep it the same (c) we change it
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) muddy water (d) cotton or cloth
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) yeast (d) a funnel
27. 27.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
29. 29.True or false: bran from wheat flour is done by sieving. (a) False (b) True
30. 30.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
32. 32.🫗 Which of these is done by filtering? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) sugar from sugar water
33. 33.🫗 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
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) a mirror (d) a balloon
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
36. 36.🔮 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
37. 37.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) filtering (d) handpicking
38. 38.🫗 How do we separate husk from rice grain? (a) handpicking (b) sieving (c) evaporating (d) winnowing
39. 39.⚖️ 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
40. 40.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) husk from rice grain (c) bad grains from rice (d) small stones from dal

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