Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 452 · 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.🔍 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
2. 2.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
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 keep it the same (b) we measure it (c) we change it
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a clean glass (c) a funnel (d) sand and pebbles
5. 5.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) yeast (d) muddy water
6. 6.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) mud from water (d) small stones from dal
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
8. 8.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) a magnet (d) a funnel
10. 10.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
12. 12.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
13. 13.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
14. 14.True or false: salt from sea water is done by filtering. (a) False (b) True
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) the salt (d) nothing
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
17. 17.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
18. 18.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
19. 19.⚖️ 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
20. 20.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) cotton or cloth
22. 22.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
23. 23.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
26. 26.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a balloon
28. 28.⚖️ 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) how clear the water is (c) the filter material (d) the same muddy water
29. 29.🫗 How do we separate gravel from fine sand? (a) evaporating (b) handpicking (c) sieving (d) winnowing
30. 30.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) muddier (d) salty
31. 31.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) evaporating
32. 32.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) husk from rice grain (c) gravel from fine sand (d) bad grains from rice
33. 33.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) handpicking (d) sieving
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) muddy water (d) turmeric powder
35. 35.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
36. 36.True or false: bad grains from rice is done by handpicking. (a) True (b) False
37. 37.🫗 Which of these is done by sieving? (a) husk from rice grain (b) tea leaves from tea (c) small stones from dal (d) bran from wheat flour
38. 38.⚖️ 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) the filter material (c) the same funnel (d) the amount poured
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
40. 40.⚖️ 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 glass

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