Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 825 · 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.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a balloon (d) a funnel
4. 4.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) yeast (c) muddy water (d) cotton or cloth
7. 7.True or false: mud from water is done by filtering. (a) False (b) True
8. 8.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) turmeric powder (d) yeast
9. 9.⚖️ 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) False (b) True
10. 10.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) it turns to sand (d) yes, all of it
11. 11.⚖️ 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
12. 12.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
13. 13.⚖️ 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
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
15. 15.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
16. 16.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) mud from water (c) husk from rice grain (d) bad grains from rice
17. 17.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) sugar from sugar water (c) small stones from dal (d) gravel from fine sand
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a mirror (c) a clean glass (d) muddy water
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
22. 22.🫗 How do we separate gravel from fine sand? (a) filtering (b) evaporating (c) winnowing (d) sieving
23. 23.🛟 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
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) a clean glass (c) sand and pebbles (d) cotton or cloth
25. 25.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
26. 26.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) filtering (c) evaporating (d) winnowing
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) muddy water (d) a magnet
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
29. 29.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
30. 30.🫗 How do we separate tea leaves from tea? (a) evaporating (b) winnowing (c) handpicking (d) filtering
31. 31.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same glass (c) the filter material (d) the amount poured
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) a battery cell
34. 34.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
36. 36.True or false: gravel from fine sand is done by sieving. (a) True (b) False
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) a clean glass (c) muddy water (d) a funnel
38. 38.🫗 How do we separate bran from wheat flour? (a) evaporating (b) handpicking (c) sieving (d) filtering
39. 39.🫗 How do we separate sugar from sugar water? (a) sieving (b) evaporating (c) handpicking (d) filtering
40. 40.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates

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