Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 61 · 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.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
2. 2.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
3. 3.🫗 How do we separate husk from rice grain? (a) filtering (b) sieving (c) winnowing (d) handpicking
4. 4.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
5. 5.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) sand and pebbles (d) a funnel
8. 8.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) tea stays behind (c) both stay behind (d) leaves pass through
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) a funnel (d) cotton or cloth
10. 10.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) filtering (d) winnowing
11. 11.⚖️ 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) True (b) False
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) cotton or cloth (c) muddy water (d) sand and pebbles
13. 13.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
14. 14.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a funnel (d) a battery cell
17. 17.⚖️ 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 muddy water (c) the filter material (d) the same glass
18. 18.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
19. 19.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is salty (d) clear water is sweet
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a balloon (d) cotton or cloth
22. 22.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
24. 24.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) small stones from dal (c) gravel from fine sand (d) salt from sea water
25. 25.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) handpicking
26. 26.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) sand and pebbles (d) a battery cell
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a clean glass (d) a magnet
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) turmeric powder (d) yeast
29. 29.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
30. 30.⚖️ 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
31. 31.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
32. 32.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
33. 33.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) sugar from sugar water (c) mud from water (d) bran from wheat flour
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.True or false: salt from sea water is done by evaporating. (a) False (b) True
36. 36.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) husk from rice grain (c) sugar from sugar water (d) tea leaves from tea
37. 37.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
39. 39.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a clean glass (d) a battery cell

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