Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 436 · 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.True or false: bran from wheat flour is done by winnowing. (a) True (b) False
2. 2.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
3. 3.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
6. 6.⚖️ 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 funnel (c) the same muddy water (d) the filter material
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the same funnel (c) the filter material (d) how clear the water is
8. 8.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) muddy water (d) yeast
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
11. 11.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
12. 12.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
13. 13.🫗 How do we separate small stones from dal? (a) handpicking (b) sieving (c) evaporating (d) winnowing
14. 14.🫗 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
15. 15.🫗 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
16. 16.🫗 Which of these is done by winnowing? (a) mud from water (b) gravel from fine sand (c) bran from wheat flour (d) chaff from wheat grain
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) cotton or cloth (d) a funnel
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a clean glass (d) a balloon
19. 19.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a funnel (c) a battery cell (d) a mirror
20. 20.⚖️ 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
21. 21.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) sieving (c) handpicking (d) filtering
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
23. 23.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
24. 24.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
25. 25.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
26. 26.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
27. 27.True or false: mud from water is done by handpicking. (a) True (b) False
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
31. 31.🔮 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
32. 32.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
33. 33.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
34. 34.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
35. 35.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
36. 36.⚖️ 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
37. 37.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a battery cell (d) yeast
38. 38.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
39. 39.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) chaff from wheat grain (c) mud from water (d) bran from wheat flour
40. 40.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) winnowing (d) sieving

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