Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 314 · 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.⚖️ 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 funnel (b) the filter material (c) the same muddy water (d) how clear the water is
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) a clean glass (d) a funnel
3. 3.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
4. 4.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
5. 5.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) filtering
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) sand and pebbles (d) a mirror
7. 7.True or false: bran from wheat flour is done by sieving. (a) True (b) False
8. 8.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
9. 9.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
10. 10.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a magnet (c) yeast (d) a battery cell
11. 11.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) muddy water (c) cotton or cloth (d) a clean glass
13. 13.🫗 How do we separate husk from rice grain? (a) evaporating (b) winnowing (c) sieving (d) handpicking
14. 14.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
15. 15.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
16. 16.🫗 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
17. 17.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
18. 18.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
19. 19.🔍 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
20. 20.True or false: husk from rice grain is done by sieving. (a) False (b) True
21. 21.🫗 Which of these is done by winnowing? (a) small stones from dal (b) chaff from wheat grain (c) salt from sea water (d) bran from wheat flour
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) salty (d) clearer
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.⚖️ 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 funnel (c) the filter material
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
26. 26.🫗 How do we separate salt from sea water? (a) handpicking (b) filtering (c) evaporating (d) winnowing
27. 27.⚖️ 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
28. 28.🫗 How do we separate bad grains from rice? (a) filtering (b) evaporating (c) winnowing (d) handpicking
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) sand and pebbles (d) a funnel
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) a balloon
32. 32.🫗 Which of these is done by sieving? (a) bad grains from rice (b) small stones from dal (c) husk from rice grain (d) bran from wheat flour
33. 33.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
34. 34.🫗 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
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the amount poured (c) how clear the water is (d) the same glass
36. 36.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
37. 37.⚖️ 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) True (b) False
38. 38.True or false: husk from rice grain is done by winnowing. (a) False (b) True
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) muddy water (d) a clean glass
40. 40.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True

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