Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 869 · 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 floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) muddy water (c) sand and pebbles (d) a funnel
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the filter material (c) how clear the water is (d) the same funnel
4. 4.⚖️ 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 measure it (c) we change it
5. 5.⚖️ 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 change it (c) we keep it the same
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ 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 funnel (b) the amount poured (c) the same muddy water (d) the filter material
8. 8.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a funnel (c) turmeric powder (d) a magnet
9. 9.⚖️ 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 amount poured (c) the filter material
10. 10.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a battery cell
12. 12.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
13. 13.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
14. 14.🫗 Which of these is done by sieving? (a) mud from water (b) sugar from sugar water (c) bran from wheat flour (d) salt from sea water
15. 15.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) salt from sea water (c) small stones from dal (d) bran from wheat flour
16. 16.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) small stones from dal (c) chaff from wheat grain (d) mud from water
17. 17.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a magnet (d) sand and pebbles
18. 18.True or false: salt from sea water is done by winnowing. (a) True (b) False
19. 19.🫗 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
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
21. 21.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
23. 23.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
24. 24.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
25. 25.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
27. 27.🫗 Which of these is done by filtering? (a) small stones from dal (b) chaff from wheat grain (c) tea leaves from tea (d) bran from wheat flour
28. 28.🫗 How do we separate sugar from sugar water? (a) winnowing (b) evaporating (c) sieving (d) filtering
29. 29.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
30. 30.True or false: salt from sea water is done by evaporating. (a) True (b) False
31. 31.🫗 How do we separate bran from wheat flour? (a) handpicking (b) winnowing (c) sieving (d) evaporating
32. 32.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
33. 33.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) bad grains from rice (c) gravel from fine sand (d) husk from rice grain
34. 34.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
35. 35.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) filtering (d) winnowing
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
37. 37.🫗 Which of these is done by handpicking? (a) salt from sea water (b) sugar from sugar water (c) small stones from dal (d) gravel from fine sand
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) cotton or cloth (d) sand and pebbles
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) muddy water (d) a funnel
40. 40.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold

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