Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 991 · 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.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
2. 2.🔮 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
3. 3.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) winnowing (d) sieving
4. 4.⚖️ 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 filter material (c) the same funnel (d) how clear the water is
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) the same glass (d) the same funnel
6. 6.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
7. 7.⚖️ 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
8. 8.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
9. 9.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
10. 10.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
12. 12.🫗 How do we separate mud from water? (a) sieving (b) evaporating (c) filtering (d) handpicking
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a mirror (d) a funnel
16. 16.🫗 How do we separate small stones from dal? (a) winnowing (b) filtering (c) handpicking (d) evaporating
17. 17.⚖️ 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
18. 18.True or false: bad grains from rice is done by handpicking. (a) False (b) True
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a clean glass (d) a magnet
20. 20.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
21. 21.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
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 glass (b) the filter material (c) how clear the water is
24. 24.True or false: gravel from fine sand is done by sieving. (a) False (b) True
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) muddy water (c) a battery cell (d) a magnet
27. 27.🫗 How do we separate bran from wheat flour? (a) filtering (b) handpicking (c) sieving (d) evaporating
28. 28.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) sieving (d) filtering
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) yeast (d) a clean glass
30. 30.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
31. 31.⚖️ 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
32. 32.🫗 Which of these is done by filtering? (a) small stones from dal (b) mud from water (c) bran from wheat flour (d) husk from rice grain
33. 33.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) small stones from dal (c) chaff from wheat grain (d) gravel from fine sand
34. 34.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) sieving (c) filtering (d) winnowing
35. 35.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a clean glass (c) a funnel (d) a battery cell
37. 37.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) small stones from dal (c) bran from wheat flour (d) mud from water
38. 38.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a balloon (d) a mirror
39. 39.True or false: bad grains from rice is done by filtering. (a) True (b) False
40. 40.True or false: mud from water is done by handpicking. (a) True (b) False

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