Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 968 · 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.⚖️ 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 measure it (c) we keep it the same
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) a clean glass (d) cotton or cloth
3. 3.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
4. 4.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
5. 5.🫗 How do we separate small stones from dal? (a) evaporating (b) handpicking (c) sieving (d) filtering
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) sand and pebbles (d) cotton or cloth
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
8. 8.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
9. 9.🫗 Which of these is done by sieving? (a) bad grains from rice (b) salt from sea water (c) tea leaves from tea (d) bran from wheat flour
10. 10.True or false: bad grains from rice is done by handpicking. (a) True (b) False
11. 11.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a magnet (d) a battery cell
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same glass (c) how clear the water is
13. 13.True or false: salt from sea water is done by handpicking. (a) False (b) True
14. 14.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) gravel from fine sand (c) mud from water (d) sugar from sugar water
15. 15.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
16. 16.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
17. 17.⚖️ 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 same glass (c) the filter material (d) the same funnel
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) cotton or cloth
19. 19.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) a balloon (d) a magnet
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the amount poured (c) the same muddy water (d) how clear the water is
22. 22.🛟 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
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🫗 How do we separate mud from water? (a) handpicking (b) winnowing (c) filtering (d) sieving
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) a funnel (d) cotton or cloth
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) muddy water (d) a clean glass
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ 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
30. 30.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
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.True or false: yeast is needed for the muddy water filter. (a) False (b) True
33. 33.⚖️ 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) False (b) True
34. 34.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) yeast (d) muddy water
36. 36.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
38. 38.⚖️ 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) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed

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