Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 984 · 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) sand and pebbles (b) a clean glass (c) cotton or cloth (d) a magnet
2. 2.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
3. 3.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) yeast (d) cotton or cloth
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) the water (d) nothing
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) muddy water (d) cotton or cloth
7. 7.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
8. 8.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
9. 9.🫗 Which of these is done by sieving? (a) salt from sea water (b) bran from wheat flour (c) bad grains from rice (d) mud from water
10. 10.🫗 Which of these is done by winnowing? (a) salt from sea water (b) bran from wheat flour (c) chaff from wheat grain (d) tea leaves from tea
11. 11.True or false: muddy water is 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? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same muddy water (d) the amount poured
13. 13.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) chaff from wheat grain (c) bad grains from rice (d) gravel from fine sand
14. 14.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a balloon (d) a funnel
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
17. 17.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) salt from sea water (c) bad grains from rice (d) mud from water
18. 18.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) filtering (d) handpicking
19. 19.True or false: gravel from fine sand is done by sieving. (a) True (b) False
20. 20.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
22. 22.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) small stones from dal (d) bran from wheat flour
23. 23.True or false: small stones from dal is done by sieving. (a) True (b) False
24. 24.⚖️ 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
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.⚖️ 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 glass (d) the amount poured
28. 28.True or false: mud from water is done by filtering. (a) True (b) False
29. 29.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bran from wheat flour (c) sugar from sugar water (d) mud from water
30. 30.🔮 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
31. 31.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
32. 32.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) evaporating (d) winnowing
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a clean glass (d) a battery cell
35. 35.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
36. 36.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
37. 37.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
38. 38.⚖️ 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
39. 39.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
40. 40.⚖️ 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

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