Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 751 · 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 winnowing? (a) small stones from dal (b) sugar from sugar water (c) husk from rice grain (d) mud from water
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
3. 3.⚖️ 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) how clear the water is (c) the same funnel (d) the amount poured
4. 4.⚖️ 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 same funnel (c) the same muddy water (d) the filter material
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a battery cell (c) muddy water (d) sand and pebbles
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) sand and pebbles (d) a balloon
9. 9.⚖️ 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) False (b) True
10. 10.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sugar (d) it turns to sand
12. 12.True or false: mud from water is done by evaporating. (a) False (b) True
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) sand and pebbles (d) cotton or cloth
14. 14.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
15. 15.🫗 Which of these is done by filtering? (a) salt from sea water (b) small stones from dal (c) mud from water (d) husk from rice grain
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
17. 17.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
18. 18.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
19. 19.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
20. 20.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
21. 21.🫗 How do we separate gravel from fine sand? (a) evaporating (b) winnowing (c) filtering (d) sieving
22. 22.🫗 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
23. 23.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
24. 24.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
25. 25.True or false: gravel from fine sand is done by sieving. (a) False (b) True
26. 26.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
27. 27.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
28. 28.⚖️ 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 measure it (b) we change it (c) we keep it the same
29. 29.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
30. 30.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) chaff from wheat grain (c) small stones from dal (d) bran from wheat flour
31. 31.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a mirror (d) a balloon
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a magnet (d) a clean glass
34. 34.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
35. 35.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) winnowing (c) evaporating (d) filtering
36. 36.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) clearer (d) hot
37. 37.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
38. 38.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
40. 40.True or false: yeast is needed for the muddy water filter. (a) False (b) True

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