Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 203 · 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.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) cotton or cloth (c) turmeric powder (d) muddy water
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
3. 3.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
6. 6.⚖️ 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 amount poured
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) cotton or cloth (d) a clean glass
8. 8.⚖️ 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
9. 9.🔮 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
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a magnet (c) a clean glass (d) a funnel
11. 11.⚖️ 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 same glass (d) the same muddy water
12. 12.🛟 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
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
15. 15.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
16. 16.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a mirror (c) cotton or cloth (d) a magnet
17. 17.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
18. 18.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
20. 20.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) yeast (d) a balloon
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
22. 22.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
23. 23.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
24. 24.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) no, germs may stay (c) yes, always (d) yes, if it is cold
25. 25.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a balloon (c) a clean glass (d) cotton or cloth
26. 26.⚖️ 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
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) small stones from dal (c) chaff from wheat grain (d) mud from water
29. 29.True or false: tea leaves from tea is done by filtering. (a) True (b) False
30. 30.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
32. 32.🫗 How do we separate gravel from fine sand? (a) filtering (b) winnowing (c) handpicking (d) sieving
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
34. 34.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
35. 35.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) sugar from sugar water (c) chaff from wheat grain (d) salt from sea water
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a battery cell (d) yeast
37. 37.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
38. 38.🫗 Which of these is done by handpicking? (a) small stones from dal (b) bran from wheat flour (c) mud from water (d) gravel from fine sand
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same glass (d) the same muddy water
40. 40.True or false: bad grains from rice is done by handpicking. (a) False (b) True

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