Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 986 · 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.🔍 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
2. 2.🫗 How do we separate gravel from fine sand? (a) winnowing (b) handpicking (c) filtering (d) sieving
3. 3.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) filtering (d) winnowing
4. 4.True or false: mud from water is done by handpicking. (a) True (b) False
5. 5.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
6. 6.🔮 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
7. 7.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) handpicking (d) winnowing
8. 8.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a balloon (c) a magnet (d) turmeric powder
9. 9.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
10. 10.🫗 Which of these is done by filtering? (a) salt from sea water (b) bad grains from rice (c) husk from rice grain (d) tea leaves from tea
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) a funnel (d) sand and pebbles
12. 12.True or false: gravel from fine sand is done by sieving. (a) True (b) False
13. 13.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
14. 14.⚖️ 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
15. 15.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
16. 16.True or false: salt from sea water is done by evaporating. (a) True (b) False
17. 17.⚖️ 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) True (b) False
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.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
21. 21.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is hot (c) clear water is salty (d) clear water is sweet
22. 22.⚖️ 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 keep it the same (b) we change it (c) we measure it
23. 23.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
24. 24.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, if it is clear (d) yes, always
25. 25.True or false: husk from rice grain is done by winnowing. (a) False (b) True
26. 26.⚖️ 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 muddy water (c) the filter material (d) the same glass
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
28. 28.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
29. 29.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
30. 30.True or false: husk from rice grain is done by filtering. (a) False (b) True
31. 31.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
32. 32.⚖️ 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 muddy water
33. 33.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a clean glass (d) a battery cell
35. 35.⚖️ 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
36. 36.True or false: bran from wheat flour is done by sieving. (a) True (b) False
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) a balloon (d) sand and pebbles
38. 38.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
39. 39.🫗 How do we separate tea leaves from tea? (a) evaporating (b) handpicking (c) sieving (d) filtering
40. 40.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves

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