Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 937 · 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? Which of these is the one thing we change? (a) the same muddy water (b) the same funnel (c) the amount poured (d) the filter material
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a clean glass (d) cotton or cloth
3. 3.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
4. 4.🫗 How do we separate gravel from fine sand? (a) filtering (b) sieving (c) winnowing (d) evaporating
5. 5.🔮 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
6. 6.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
7. 7.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) filtering (d) winnowing
8. 8.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
10. 10.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ 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
12. 12.⚖️ 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) True (b) False
13. 13.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
14. 14.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) yeast (d) muddy water
17. 17.True or false: husk from rice grain is done by handpicking. (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 filter material”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🫗 Which of these is done by winnowing? (a) salt from sea water (b) mud from water (c) gravel from fine sand (d) husk from rice grain
20. 20.True or false: mud from water is done by filtering. (a) False (b) True
21. 21.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) it turns to sand (d) no, salt passes through
23. 23.⚖️ 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 same glass (c) how clear the water is (d) the same funnel
24. 24.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) cotton or cloth (c) muddy water (d) sand and pebbles
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a funnel (c) muddy water (d) a clean glass
27. 27.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bad grains from rice (c) bran from wheat flour (d) sugar from sugar water
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a battery cell (c) yeast (d) sand and pebbles
31. 31.⚖️ 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 muddy water (c) the filter material
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a balloon (c) muddy water (d) a clean glass
34. 34.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the filter traps mud (d) the mud dissolves
35. 35.🛟 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
36. 36.⚖️ 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 change it (b) we keep it the same (c) we measure it
37. 37.🫗 How do we separate bad grains from rice? (a) winnowing (b) handpicking (c) evaporating (d) sieving
38. 38.🫗 Which of these is done by filtering? (a) salt from sea water (b) mud from water (c) bran from wheat flour (d) bad grains from rice
39. 39.🧺 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
40. 40.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed

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