Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 508 · 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: a magnet is not needed for the muddy water filter. (a) True (b) False
2. 2.🫗 Which of these is done by winnowing? (a) small stones from dal (b) husk from rice grain (c) sugar from sugar water (d) salt from sea water
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the water (d) the mud
4. 4.⚖️ 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) False (b) True
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 same funnel (b) the same glass (c) the filter material (d) the same muddy water
6. 6.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
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 keep it the same (b) we measure it (c) we change it
8. 8.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
9. 9.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a clean glass (d) a magnet
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the amount poured (c) the filter material (d) how clear the water is
11. 11.True or false: gravel from fine sand is done by handpicking. (a) False (b) True
12. 12.🫗 How do we separate bad grains from rice? (a) winnowing (b) evaporating (c) sieving (d) handpicking
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) cotton or cloth (d) a balloon
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
15. 15.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
17. 17.⚖️ 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) True (b) False
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
20. 20.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) bad grains from rice (c) husk from rice grain (d) salt from sea water
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
22. 22.🫗 How do we separate husk from rice grain? (a) winnowing (b) sieving (c) handpicking (d) filtering
23. 23.🫗 How do we separate salt from sea water? (a) handpicking (b) winnowing (c) sieving (d) evaporating
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 what we measure. (a) False (b) True
26. 26.🫗 Which of these is done by sieving? (a) mud from water (b) small stones from dal (c) chaff from wheat grain (d) gravel from fine sand
27. 27.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
29. 29.True or false: muddy water is not 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 filter material”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
32. 32.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
33. 33.True or false: husk from rice grain is done by sieving. (a) False (b) True
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a funnel (d) yeast
36. 36.🔍 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
37. 37.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) muddy water (c) a magnet (d) a mirror
38. 38.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
39. 39.⚖️ 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
40. 40.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) salt from sea water (c) bad grains from rice (d) bran from wheat flour

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