Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 545 · 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 a balloon for the muddy water filter? (a) needed (b) not needed
2. 2.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) handpicking (d) sieving
3. 3.🫗 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
4. 4.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) no, salt passes through (d) it turns to sand
5. 5.True or false: yeast is needed for the muddy water filter. (a) True (b) False
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
7. 7.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) mud from water (c) small stones from dal (d) husk from rice grain
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves pass through (d) leaves stay behind
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) yeast (d) cotton or cloth
10. 10.🔮 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
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) the same funnel (b) the filter material (c) the same muddy water (d) how clear the water is
12. 12.🧺 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
13. 13.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) a battery cell
15. 15.⚖️ 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
16. 16.⚖️ 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
17. 17.⚖️ 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 filter material (c) the same muddy water
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) cotton or cloth (d) turmeric powder
19. 19.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) muddy water (d) a clean glass
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it dissolves (d) it turns to sand
22. 22.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
23. 23.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a battery cell (d) a clean glass
24. 24.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) bran from wheat flour (c) mud from water (d) salt from sea water
25. 25.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
26. 26.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
29. 29.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) handpicking (d) filtering
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a funnel (d) a magnet
33. 33.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
34. 34.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
35. 35.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
36. 36.⚖️ 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
37. 37.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
40. 40.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) sieving (d) winnowing

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