Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 65 · 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.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) muddy water (d) cotton or cloth
3. 3.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) evaporating (d) handpicking
6. 6.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) chaff from wheat grain (c) husk from rice grain (d) sugar from sugar water
7. 7.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) bran from wheat flour (c) small stones from dal (d) husk from rice grain
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) muddy water (d) sand and pebbles
9. 9.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
10. 10.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
11. 11.🛟 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
12. 12.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
13. 13.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) mud from water (d) small stones from dal
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) sand and pebbles (d) muddy water
16. 16.⚖️ 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 glass (c) the same funnel (d) the same muddy water
17. 17.🔍 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 turns to sand (d) it dissolves
18. 18.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) sand and pebbles (d) a mirror
19. 19.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
20. 20.True or false: small stones from dal is done by handpicking. (a) True (b) False
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) cotton or cloth (d) muddy water
22. 22.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
23. 23.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) turmeric powder (d) cotton or cloth
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a mirror
26. 26.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
27. 27.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) handpicking (d) winnowing
28. 28.🫗 Which of these is done by filtering? (a) small stones from dal (b) gravel from fine sand (c) mud from water (d) bad grains from rice
29. 29.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) muddy water (d) a mirror
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) cotton or cloth (d) a balloon
33. 33.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
34. 34.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
35. 35.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
36. 36.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) evaporating
37. 37.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
38. 38.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
39. 39.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same

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