Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 117 · 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.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) small stones from dal (c) husk from rice grain (d) gravel from fine sand
2. 2.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
3. 3.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) yeast (d) sand and pebbles
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) a magnet (d) a battery cell
7. 7.⚖️ 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
8. 8.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) small stones from dal (c) husk from rice grain (d) bad grains from rice
9. 9.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
10. 10.⚖️ 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 change it (c) we measure it
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) a funnel (d) muddy water
13. 13.⚖️ 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
14. 14.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
16. 16.🫗 How do we separate small stones from dal? (a) evaporating (b) filtering (c) handpicking (d) winnowing
17. 17.🛟 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
18. 18.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
19. 19.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
20. 20.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) bran from wheat flour (c) gravel from fine sand (d) small stones from dal
21. 21.🫗 Which of these is done by winnowing? (a) mud from water (b) bran from wheat flour (c) chaff from wheat grain (d) bad grains from rice
22. 22.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) bad grains from rice (d) salt from sea water
23. 23.⚖️ 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
24. 24.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a magnet (c) muddy water (d) a mirror
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a balloon (c) cotton or cloth (d) sand and pebbles
28. 28.True or false: bad grains from rice is done by sieving. (a) False (b) True
29. 29.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a mirror (d) muddy water
31. 31.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
33. 33.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) salt from sea water
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) a battery cell (d) a funnel
35. 35.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) filtering (d) winnowing
36. 36.True or false: muddy water 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? True or false: the same funnel is kept the same. (a) True (b) False
38. 38.⚖️ 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 muddy water (b) the same funnel (c) the filter material (d) the amount poured
39. 39.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
40. 40.True or false: small stones from dal is done by handpicking. (a) True (b) False

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