Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 721 · 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.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) evaporating (d) filtering
2. 2.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
3. 3.⚖️ 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
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a mirror (c) a funnel (d) a clean glass
5. 5.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
6. 6.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
7. 7.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
8. 8.⚖️ 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 funnel (d) how clear the water is
9. 9.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) husk from rice grain (c) small stones from dal (d) chaff from wheat grain
10. 10.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is cold (d) yes, if it is clear
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) cotton or cloth (d) a mirror
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
13. 13.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) yeast (d) muddy water
15. 15.⚖️ 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
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a balloon (d) sand and pebbles
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) a clean glass (c) sand and pebbles (d) cotton or cloth
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a battery cell (c) sand and pebbles (d) a funnel
20. 20.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) sugar from sugar water (c) husk from rice grain (d) tea leaves from tea
21. 21.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is hot (d) clear water is salty
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a balloon (d) a funnel
23. 23.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
24. 24.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) gravel from fine sand (c) sugar from sugar water (d) small stones from dal
25. 25.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
26. 26.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
27. 27.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
28. 28.🔍 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
29. 29.True or false: husk from rice grain is done by winnowing. (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 same glass”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the same funnel (c) how clear the water is (d) the same muddy water
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) a funnel (d) cotton or cloth
33. 33.🫗 Which of these is done by sieving? (a) bad grains from rice (b) tea leaves from tea (c) bran from wheat flour (d) husk from rice grain
34. 34.⚖️ 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 filter material (c) the same funnel
35. 35.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
36. 36.True or false: small stones from dal is done by filtering. (a) False (b) True
37. 37.🧺 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 battery cell
38. 38.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
39. 39.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
40. 40.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a balloon (d) muddy water

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