Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 8 · 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? What do we do with “the same muddy water”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.🫗 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
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) True (b) False
6. 6.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) cotton or cloth (d) a mirror
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) a funnel (d) cotton or cloth
8. 8.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) handpicking (d) filtering
9. 9.⚖️ 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
10. 10.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) chaff from wheat grain (c) tea leaves from tea (d) salt from sea water
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
12. 12.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it floats on top (d) it sinks to the bottom
13. 13.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
15. 15.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
16. 16.True or false: husk from rice grain is done by handpicking. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
19. 19.⚖️ 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 amount poured (c) the same glass (d) the filter material
20. 20.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
21. 21.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a balloon (c) muddy water (d) cotton or cloth
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a clean glass (d) turmeric powder
25. 25.True or false: bran from wheat flour is done by sieving. (a) True (b) False
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the amount poured (c) how clear the water is (d) the same glass
27. 27.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: bad grains from rice is done by filtering. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) turmeric powder
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
32. 32.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) handpicking (d) evaporating
33. 33.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
35. 35.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) handpicking (d) winnowing
36. 36.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
37. 37.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
38. 38.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves pass through (d) leaves stay behind
39. 39.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) chaff from wheat grain (c) bran from wheat flour (d) bad grains from rice
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) yeast (d) a mirror

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