Separating Mixtures Experiment Worksheet

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

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