Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 631 · 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.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a clean glass (d) muddy water
2. 2.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) gravel from fine sand (d) bad grains from rice
3. 3.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bad grains from rice (c) husk from rice grain (d) salt from sea water
4. 4.⚖️ 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) False (b) True
5. 5.⚖️ 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 funnel (b) the same muddy water (c) the filter material (d) the amount poured
6. 6.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a clean glass (d) sand and pebbles
9. 9.⚖️ 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 change it (c) we keep it the same
10. 10.⚖️ 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
11. 11.🫗 How do we separate mud from water? (a) filtering (b) handpicking (c) winnowing (d) evaporating
12. 12.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
13. 13.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) sand and pebbles (d) a funnel
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) muddy water (d) a magnet
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) a funnel
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🫗 Which of these is done by winnowing? (a) mud from water (b) salt from sea water (c) husk from rice grain (d) tea leaves from tea
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a battery cell (d) sand and pebbles
20. 20.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
21. 21.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
22. 22.True or false: small stones from dal is done by handpicking. (a) False (b) True
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) a magnet
24. 24.⚖️ 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) the amount poured (c) how clear the water is
25. 25.🔮 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
26. 26.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
27. 27.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
28. 28.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
29. 29.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a battery cell (c) a clean glass (d) muddy water
31. 31.⚖️ 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
32. 32.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
33. 33.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) husk from rice grain (c) bran from wheat flour (d) tea leaves from tea
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the same glass (d) the filter material
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) a funnel (d) a clean glass
36. 36.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the salt (d) the mud
37. 37.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
38. 38.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) lick your fingers (d) wipe hands on face
39. 39.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
40. 40.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed

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