Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 339 · 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 should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
2. 2.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a clean glass (d) a balloon
3. 3.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
5. 5.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
7. 7.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bad grains from rice (c) husk from rice grain (d) bran from wheat flour
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) yeast (c) cotton or cloth (d) turmeric powder
9. 9.🔮 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
10. 10.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
11. 11.True or false: bad grains from rice is done by winnowing. (a) False (b) True
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) cotton or cloth (d) a funnel
13. 13.⚖️ 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) False (b) True
14. 14.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) chaff from wheat grain (c) bad grains from rice (d) mud from water
15. 15.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) yeast (d) sand and pebbles
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a battery cell (c) a balloon (d) a mirror
18. 18.⚖️ 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) how clear the water is (c) the same muddy water
19. 19.🫗 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
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) sand and pebbles (d) a battery cell
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a magnet (d) sand and pebbles
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.True or false: bran from wheat flour is done by sieving. (a) True (b) False
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter adds soap (d) the filter traps mud
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) yeast (d) a clean glass
28. 28.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
30. 30.⚖️ 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
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
32. 32.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
33. 33.True or false: mud from water is done by handpicking. (a) True (b) False
34. 34.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) sieving (d) evaporating
35. 35.⚖️ 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 glass (b) the same muddy water (c) the same funnel (d) the filter material
36. 36.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) salt from sea water (c) tea leaves from tea (d) small stones from dal
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
39. 39.🫗 How do we separate small stones from dal? (a) handpicking (b) filtering (c) winnowing (d) sieving
40. 40.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False

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