Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 711 · 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.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) small stones from dal (c) tea leaves from tea (d) sugar from sugar water
3. 3.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
4. 4.🔍 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
5. 5.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the filter material (c) how clear the water is (d) the same muddy water
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
9. 9.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
10. 10.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) cotton or cloth (d) a balloon
12. 12.⚖️ 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) the filter material (c) the same glass (d) the same muddy water
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
14. 14.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) a clean glass (d) a mirror
16. 16.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
17. 17.🫗 Which of these is done by filtering? (a) small stones from dal (b) bad grains from rice (c) mud from water (d) chaff from wheat grain
18. 18.🫗 Which of these is done by evaporating? (a) salt from sea water (b) bad grains from rice (c) gravel from fine sand (d) husk from rice grain
19. 19.True or false: husk from rice grain is done by evaporating. (a) False (b) True
20. 20.True or false: tea leaves from tea is done by filtering. (a) False (b) True
21. 21.⚖️ 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
22. 22.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
25. 25.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) sieving
26. 26.⚖️ 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
27. 27.🫗 How do we separate mud from water? (a) evaporating (b) sieving (c) handpicking (d) filtering
28. 28.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
29. 29.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
30. 30.⚖️ 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
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) cotton or cloth (d) sand and pebbles
33. 33.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a funnel (c) yeast (d) a mirror
34. 34.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) evaporating
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) cotton or cloth (d) yeast
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a clean glass (d) a battery cell
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.True or false: husk from rice grain is done by handpicking. (a) False (b) True
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) turmeric powder (c) muddy water (d) a funnel

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