Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 368 · 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.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a battery cell (d) sand and pebbles
5. 5.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
6. 6.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
7. 7.⚖️ 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) False (b) True
8. 8.🫗 Which of these is done by winnowing? (a) small stones from dal (b) sugar from sugar water (c) bran from wheat flour (d) chaff from wheat grain
9. 9.⚖️ 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 amount poured
10. 10.🫗 How do we separate salt from sea water? (a) evaporating (b) handpicking (c) filtering (d) winnowing
11. 11.🛟 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
12. 12.⚖️ 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 same muddy water (c) the same glass (d) the same funnel
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) sand and pebbles (d) a clean glass
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a magnet (d) muddy water
16. 16.⚖️ 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 change it (c) we measure it
17. 17.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
18. 18.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bran from wheat flour (c) chaff from wheat grain (d) salt from sea water
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.True or false: gravel from fine sand is done by handpicking. (a) False (b) True
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) turmeric powder (d) cotton or cloth
22. 22.True or false: gravel from fine sand is done by sieving. (a) True (b) False
23. 23.⚖️ 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 amount poured (d) the same glass
24. 24.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) salt from sea water (c) gravel from fine sand (d) tea leaves from tea
25. 25.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
26. 26.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
27. 27.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
28. 28.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
29. 29.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
31. 31.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) handpicking (d) sieving
32. 32.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) a funnel (d) turmeric powder
34. 34.⚖️ 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 change it (c) we measure it
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) yeast (d) sand and pebbles
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a mirror (d) cotton or cloth
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a mirror (c) sand and pebbles (d) muddy water
38. 38.🫗 How do we separate tea leaves from tea? (a) evaporating (b) filtering (c) sieving (d) handpicking
39. 39.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) cotton or cloth (c) a funnel (d) sand and pebbles

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