Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 328 · 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 sinks to the bottom (b) it turns to sand (c) it dissolves (d) it floats on top
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) turmeric powder (d) a funnel
3. 3.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
4. 4.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
5. 5.🫗 How do we separate bad grains from rice? (a) sieving (b) winnowing (c) handpicking (d) evaporating
6. 6.⚖️ 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 amount poured (c) the same muddy water (d) the filter material
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
8. 8.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
9. 9.True or false: mud from water is done by evaporating. (a) False (b) True
10. 10.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
11. 11.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
12. 12.⚖️ 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) the same funnel (c) how clear the water is
13. 13.True or false: small stones from dal is done by handpicking. (a) False (b) True
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) sand and pebbles (d) a clean glass
15. 15.⚖️ 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) the same glass (c) how clear the water is
16. 16.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) cotton or cloth (d) yeast
18. 18.True or false: gravel from fine sand is done by sieving. (a) True (b) False
19. 19.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
20. 20.True or false: small stones from dal is done by evaporating. (a) True (b) False
21. 21.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
22. 22.⚖️ 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 measure it (c) we change it
23. 23.True or false: chaff from wheat grain is done by filtering. (a) False (b) True
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the amount poured (c) the filter material (d) the same glass
25. 25.⚖️ 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
26. 26.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) small stones from dal (c) sugar from sugar water (d) gravel from fine sand
27. 27.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) the salt (d) nothing
28. 28.🫗 How do we separate salt from sea water? (a) sieving (b) winnowing (c) filtering (d) evaporating
29. 29.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
30. 30.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) a magnet
33. 33.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) muddy water (d) a mirror
34. 34.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) chaff from wheat grain (c) mud from water (d) small stones from dal
35. 35.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) evaporating (d) sieving
36. 36.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
37. 37.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) salt from sea water (c) small stones from dal (d) bad grains from rice
38. 38.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) sieving (d) filtering
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) muddy water (d) a mirror
40. 40.True or false: husk from rice grain is done by winnowing. (a) False (b) True

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