Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 946 · 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) False (b) True
2. 2.⚖️ 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) how clear the water is (c) the amount poured (d) the same muddy water
3. 3.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a funnel (d) a balloon
5. 5.⚖️ 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 filter material (c) how clear the water is (d) the same muddy water
6. 6.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) turmeric powder (d) muddy water
8. 8.🫗 Which of these is done by filtering? (a) husk from rice grain (b) salt from sea water (c) mud from water (d) gravel from fine sand
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a clean glass (c) cotton or cloth (d) a funnel
11. 11.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
12. 12.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
13. 13.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
14. 14.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) muddy water (d) a clean glass
15. 15.True or false: bad grains from rice is done by sieving. (a) False (b) True
16. 16.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
17. 17.True or false: mud from water is done by evaporating. (a) False (b) True
18. 18.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
20. 20.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
21. 21.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
22. 22.🔮 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
23. 23.⚖️ 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
24. 24.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
25. 25.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
26. 26.🫗 How do we separate small stones from dal? (a) handpicking (b) sieving (c) winnowing (d) filtering
27. 27.True or false: husk from rice grain is done by evaporating. (a) False (b) True
28. 28.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) husk from rice grain (c) bad grains from rice (d) mud from water
29. 29.True or false: bad grains from rice is done by evaporating. (a) False (b) True
30. 30.True or false: husk from rice grain is done by winnowing. (a) True (b) False
31. 31.⚖️ 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 change it (c) we measure it
32. 32.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it turns to sand (d) it floats on top
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter adds soap (d) the filter traps mud
35. 35.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a funnel (c) cotton or cloth (d) sand and pebbles
37. 37.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
38. 38.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) bran from wheat flour (c) tea leaves from tea (d) sugar from sugar water
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) a funnel (d) cotton or cloth

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