Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 475 · 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 turns to sand (c) it sinks to the bottom (d) it floats on top
2. 2.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a battery cell (d) a magnet
3. 3.True or false: bad grains from rice is done by handpicking. (a) False (b) True
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a funnel (d) a clean glass
5. 5.🫗 Which of these is done by sieving? (a) salt from sea water (b) gravel from fine sand (c) tea leaves from tea (d) mud from water
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
7. 7.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
8. 8.🛟 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
9. 9.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) husk from rice grain (c) tea leaves from tea (d) bad grains from rice
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) winnowing (d) evaporating
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
13. 13.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
14. 14.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
15. 15.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
16. 16.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) cotton or cloth (d) sand and pebbles
18. 18.🫗 How do we separate sugar from sugar water? (a) winnowing (b) handpicking (c) sieving (d) evaporating
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) turmeric powder
21. 21.True or false: salt from sea water is done by evaporating. (a) True (b) False
22. 22.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
23. 23.⚖️ 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
24. 24.⚖️ 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) the same muddy water (d) the amount poured
25. 25.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
26. 26.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
27. 27.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) winnowing (d) handpicking
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) the filter material (c) how clear the water is (d) the amount poured
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) sand and pebbles (d) a funnel
30. 30.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.🫗 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
33. 33.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) sugar from sugar water (c) salt from sea water (d) small stones from dal
34. 34.🫗 Which of these is done by evaporating? (a) mud from water (b) gravel from fine sand (c) salt from sea water (d) chaff from wheat grain
35. 35.🫗 How do we separate bran from wheat flour? (a) sieving (b) winnowing (c) handpicking (d) filtering
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
37. 37.🫗 How do we separate gravel from fine sand? (a) sieving (b) handpicking (c) evaporating (d) winnowing
38. 38.🫗 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
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a magnet (d) yeast

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