Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 155 · 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.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
2. 2.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
3. 3.True or false: salt from sea water is done by evaporating. (a) True (b) False
4. 4.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) mud from water (c) gravel from fine sand (d) bran from wheat flour
5. 5.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) nothing is needed (c) wipe hands on face (d) lick your fingers
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) sand and pebbles (d) a mirror
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) chaff from wheat grain (d) small stones from dal
9. 9.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
10. 10.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
11. 11.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) turmeric powder (d) sand and pebbles
13. 13.🫗 How do we separate husk from rice grain? (a) handpicking (b) winnowing (c) evaporating (d) filtering
14. 14.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
15. 15.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
17. 17.🫗 How do we separate small stones from dal? (a) evaporating (b) handpicking (c) winnowing (d) sieving
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) a balloon (d) sand and pebbles
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
20. 20.⚖️ 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
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.⚖️ 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
23. 23.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
24. 24.True or false: yeast is needed for the muddy water filter. (a) False (b) True
25. 25.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
26. 26.⚖️ 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
27. 27.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a battery cell
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a magnet (d) cotton or cloth
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) yeast
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a balloon
32. 32.🫗 Which of these is done by handpicking? (a) salt from sea water (b) tea leaves from tea (c) small stones from dal (d) husk from rice grain
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) how clear the water is (b) the same glass (c) the filter material
35. 35.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
36. 36.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) filtering (d) handpicking
38. 38.⚖️ 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
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) False (b) True
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) muddy water (d) turmeric powder

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