Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 727 · 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.🫗 How do we separate mud from water? (a) handpicking (b) winnowing (c) filtering (d) sieving
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a funnel (c) muddy water (d) a clean glass
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a mirror (d) cotton or cloth
4. 4.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) handpicking (d) sieving
5. 5.🫗 How do we separate husk from rice grain? (a) filtering (b) winnowing (c) sieving (d) handpicking
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
7. 7.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a funnel (c) muddy water (d) a clean glass
8. 8.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
10. 10.⚖️ 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
11. 11.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
12. 12.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) handpicking (d) filtering
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) muddy water (c) a funnel (d) cotton or cloth
14. 14.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
15. 15.⚖️ 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
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a balloon
18. 18.⚖️ 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
19. 19.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
20. 20.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
21. 21.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
23. 23.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) mud from water (c) chaff from wheat grain (d) sugar from sugar water
24. 24.⚖️ 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 funnel (c) the filter material
25. 25.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) salt from sea water (c) tea leaves from tea (d) small stones from dal
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a mirror (c) a funnel (d) muddy water
28. 28.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) the salt (d) nothing
29. 29.⚖️ 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 keep it the same (b) we change it (c) we measure it
30. 30.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
31. 31.True or false: gravel from fine sand is done by sieving. (a) False (b) True
32. 32.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
33. 33.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
34. 34.⚖️ 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
35. 35.🫗 How do we separate tea leaves from tea? (a) handpicking (b) sieving (c) filtering (d) winnowing
36. 36.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
37. 37.🔮 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
38. 38.⚖️ 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
39. 39.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it

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