Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 418 · 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: gravel from fine sand is done by sieving. (a) False (b) True
2. 2.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
3. 3.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bran from wheat flour (c) husk from rice grain (d) small stones from dal
4. 4.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
5. 5.True or false: husk from rice grain is done by handpicking. (a) True (b) False
6. 6.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) sand and pebbles (d) a clean glass
7. 7.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the filter traps mud (d) the water evaporates
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
10. 10.⚖️ 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 change it (c) we measure it
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) muddy water (d) a funnel
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) germs are invisible (d) clear water is salty
13. 13.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
14. 14.🫗 How do we separate bran from wheat flour? (a) filtering (b) winnowing (c) sieving (d) handpicking
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) yeast
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
17. 17.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
19. 19.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) nothing (d) the salt
21. 21.⚖️ 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
22. 22.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
23. 23.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
24. 24.🫗 How do we separate bad grains from rice? (a) sieving (b) evaporating (c) handpicking (d) winnowing
25. 25.🫗 How do we separate husk from rice grain? (a) handpicking (b) evaporating (c) filtering (d) winnowing
26. 26.⚖️ 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 amount poured (c) the same glass (d) the same muddy water
27. 27.🫗 How do we separate salt from sea water? (a) winnowing (b) evaporating (c) filtering (d) sieving
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
29. 29.True or false: salt from sea water is done by evaporating. (a) False (b) True
30. 30.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a mirror (d) a clean glass
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a funnel (d) cotton or cloth
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a funnel (c) a clean glass (d) sand and pebbles
34. 34.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) turmeric powder (d) sand and pebbles
37. 37.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
39. 39.⚖️ 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
40. 40.True or false: small stones from dal is done by winnowing. (a) False (b) True

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