Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 231 · 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.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) lick your fingers (d) nothing is needed
2. 2.⚖️ 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
3. 3.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
4. 4.⚖️ 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
5. 5.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
6. 6.🫗 How do we separate small stones from dal? (a) filtering (b) evaporating (c) winnowing (d) handpicking
7. 7.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
8. 8.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
9. 9.🫗 How do we separate bran from wheat flour? (a) sieving (b) evaporating (c) handpicking (d) filtering
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a mirror (d) muddy water
11. 11.⚖️ 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) how clear the water is (c) the same muddy water
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
13. 13.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ 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 glass (c) the filter material
15. 15.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a battery cell (c) a magnet (d) a mirror
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) muddy water (d) yeast
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) cotton or cloth (d) sand and pebbles
19. 19.⚖️ 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
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) yeast (c) a funnel (d) sand and pebbles
21. 21.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
22. 22.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
23. 23.True or false: small stones from dal is done by winnowing. (a) False (b) True
24. 24.⚖️ 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 measure it (c) we change it
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a mirror (d) a clean glass
26. 26.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
27. 27.True or false: chaff from wheat grain is done by winnowing. (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 glass”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.🔍 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 dissolves (d) it floats on top
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) how clear the water is (c) the amount poured (d) the same funnel
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a magnet (d) a clean glass
32. 32.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) sieving (d) winnowing
33. 33.🔮 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
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a clean glass (c) sand and pebbles (d) cotton or cloth
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) turmeric powder
37. 37.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) mud from water (c) small stones from dal (d) bran from wheat flour
38. 38.🫗 Which of these is done by filtering? (a) husk from rice grain (b) bad grains from rice (c) salt from sea water (d) tea leaves from tea
39. 39.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it

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