Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 744 · 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.⚖️ 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) how clear the water is (c) the filter material
2. 2.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) a magnet (d) a mirror
4. 4.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a magnet (c) a mirror (d) muddy water
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
6. 6.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) mud from water (c) tea leaves from tea (d) gravel from fine sand
7. 7.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
8. 8.🫗 Which of these is done by evaporating? (a) small stones from dal (b) salt from sea water (c) gravel from fine sand (d) bran from wheat flour
9. 9.True or false: bran from wheat flour is done by sieving. (a) False (b) True
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) turmeric powder (d) a funnel
12. 12.⚖️ 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) the filter material (c) how clear the water is
13. 13.🫗 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
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a mirror (d) a funnel
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
18. 18.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
19. 19.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
20. 20.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) turmeric powder (d) sand and pebbles
22. 22.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
24. 24.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
25. 25.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
26. 26.⚖️ 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
27. 27.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
28. 28.🫗 How do we separate bran from wheat flour? (a) winnowing (b) filtering (c) handpicking (d) sieving
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same glass
30. 30.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a clean glass (c) a funnel (d) sand and pebbles
32. 32.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) sieving (d) filtering
33. 33.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
34. 34.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a magnet (d) muddy water
36. 36.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
37. 37.⚖️ 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
38. 38.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) a funnel (d) a battery cell

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