Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 788 · 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: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) sand and pebbles (d) a mirror
3. 3.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
4. 4.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
5. 5.True or false: salt from sea water is done by filtering. (a) False (b) True
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) yeast (c) cotton or cloth (d) muddy water
7. 7.⚖️ 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
8. 8.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it floats on top (d) it dissolves
9. 9.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
12. 12.🫗 Which of these is done by winnowing? (a) small stones from dal (b) bran from wheat flour (c) chaff from wheat grain (d) salt from sea water
13. 13.True or false: yeast is needed for the muddy water filter. (a) False (b) True
14. 14.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
15. 15.🔮 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
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the filter material (c) the same glass (d) how clear the water is
17. 17.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) evaporating (d) handpicking
18. 18.True or false: small stones from dal is done by handpicking. (a) False (b) True
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
22. 22.⚖️ 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) True (b) False
23. 23.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
24. 24.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) turmeric powder (d) muddy water
26. 26.True or false: gravel from fine sand is done by sieving. (a) True (b) False
27. 27.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a mirror (d) sand and pebbles
28. 28.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
29. 29.🫗 How do we separate bran from wheat flour? (a) sieving (b) winnowing (c) filtering (d) handpicking
30. 30.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
31. 31.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) mud from water
32. 32.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) small stones from dal (d) mud from water
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a battery cell (d) a clean glass
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) sand and pebbles (d) a clean glass
35. 35.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) winnowing (d) handpicking
36. 36.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) a battery cell (d) muddy water
37. 37.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
38. 38.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured

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