Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 62 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) a clean glass (d) muddy water
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it floats on top (d) it dissolves
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🫗 How do we separate small stones from dal? (a) winnowing (b) filtering (c) evaporating (d) handpicking
5. 5.🫗 Which of these is done by winnowing? (a) small stones from dal (b) gravel from fine sand (c) chaff from wheat grain (d) bad grains from rice
6. 6.⚖️ 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 keep it the same (c) we measure it
7. 7.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
9. 9.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a clean glass (d) a balloon
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
12. 12.True or false: husk from rice grain is done by winnowing. (a) False (b) True
13. 13.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
14. 14.⚖️ 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
15. 15.⚖️ 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
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
18. 18.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
20. 20.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
21. 21.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
24. 24.🫗 How do we separate bran from wheat flour? (a) evaporating (b) sieving (c) handpicking (d) winnowing
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.⚖️ 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
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
28. 28.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
29. 29.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
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 glass (b) how clear the water is (c) the filter material
31. 31.⚖️ 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 muddy water (b) how clear the water is (c) the filter material (d) the amount poured
32. 32.⚖️ 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
33. 33.True or false: bad grains from rice is done by sieving. (a) False (b) True
34. 34.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
35. 35.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) evaporating (d) filtering
36. 36.⚖️ 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
37. 37.True or false: tea leaves from tea is done by filtering. (a) True (b) False
38. 38.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a battery cell (d) a balloon
39. 39.True or false: bran from wheat flour is done by sieving. (a) False (b) True
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False

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