Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 294 · 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, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
2. 2.True or false: mud from water is done by filtering. (a) False (b) True
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
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.⚖️ 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 measure it (b) we change it (c) we keep it the same
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) a mirror (d) a funnel
7. 7.🫗 How do we separate bad grains from rice? (a) filtering (b) handpicking (c) sieving (d) winnowing
8. 8.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
9. 9.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) chaff from wheat grain (c) husk from rice grain (d) small stones from dal
10. 10.True or false: bad grains from rice is done by winnowing. (a) True (b) False
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a magnet (d) a clean glass
12. 12.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) sand and pebbles (c) a funnel (d) a clean glass
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a clean glass (c) cotton or cloth (d) sand and pebbles
15. 15.🫗 How do we separate salt from sea water? (a) evaporating (b) filtering (c) handpicking (d) sieving
16. 16.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) yeast (d) a battery cell
19. 19.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) mud from water (d) husk from rice grain
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
21. 21.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
22. 22.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
23. 23.🫗 How do we separate bran from wheat flour? (a) winnowing (b) filtering (c) sieving (d) evaporating
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) a battery cell (d) cotton or cloth
25. 25.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same funnel (c) the same muddy water (d) how clear the water is
27. 27.True or false: small stones from dal is done by handpicking. (a) True (b) False
28. 28.🫗 How do we separate gravel from fine sand? (a) sieving (b) evaporating (c) winnowing (d) handpicking
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) False (b) True
30. 30.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
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 funnel (b) the filter material (c) how clear the water is (d) the amount poured
32. 32.⚖️ 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
33. 33.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
34. 34.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
35. 35.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
36. 36.True or false: yeast is needed for the muddy water filter. (a) False (b) True
37. 37.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) winnowing (c) filtering (d) evaporating
38. 38.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) muddy water (d) a clean glass

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