Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 642 · 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.True or false: husk from rice grain is done by winnowing. (a) False (b) True
2. 2.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
3. 3.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
4. 4.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a magnet (d) yeast
5. 5.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
6. 6.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
8. 8.⚖️ 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 change it (c) we keep it the same
9. 9.⚖️ 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
10. 10.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a clean glass (d) a battery cell
11. 11.True or false: bad grains from rice is done by handpicking. (a) False (b) True
12. 12.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) mud from water (c) small stones from dal (d) sugar from sugar water
13. 13.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) sand and pebbles (d) a balloon
15. 15.⚖️ 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
16. 16.True or false: mud from water is done by filtering. (a) True (b) False
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) a battery cell (d) a clean glass
18. 18.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
19. 19.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) sand and pebbles (c) cotton or cloth (d) muddy water
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) sand and pebbles (d) a clean glass
22. 22.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
23. 23.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
24. 24.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) a clean glass (d) cotton or cloth
26. 26.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
27. 27.🫗 Which of these is done by winnowing? (a) mud from water (b) husk from rice grain (c) sugar from sugar water (d) small stones from dal
28. 28.🫗 Which of these is done by sieving? (a) husk from rice grain (b) bran from wheat flour (c) salt from sea water (d) tea leaves from tea
29. 29.True or false: a mirror is not needed for the muddy water filter. (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 what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) cotton or cloth (d) a funnel
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
33. 33.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bran from wheat flour (c) salt from sea water (d) small stones from dal
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 keep it the same (b) we measure it (c) we change it
35. 35.🫗 How do we separate gravel from fine sand? (a) winnowing (b) sieving (c) filtering (d) evaporating
36. 36.True or false: a funnel is 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 same funnel”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
39. 39.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) cotton or cloth (d) muddy water

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