Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 487 · 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.⚖️ 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 same funnel (c) the same muddy water (d) the same glass
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) sand and pebbles (c) a funnel (d) cotton or cloth
3. 3.⚖️ 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 muddy water (b) the filter material (c) how clear the water is (d) the same funnel
4. 4.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
5. 5.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a magnet (d) a mirror
6. 6.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
7. 7.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
8. 8.🛟 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
9. 9.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
10. 10.🫗 Which of these is done by filtering? (a) mud from water (b) gravel from fine sand (c) salt from sea water (d) bran from wheat flour
11. 11.⚖️ 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
12. 12.True or false: small stones from dal is done by winnowing. (a) False (b) True
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) a funnel (d) muddy water
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a mirror (d) cotton or cloth
15. 15.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) chaff from wheat grain (c) mud from water (d) small stones from dal
16. 16.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
17. 17.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
18. 18.True or false: yeast is needed for the muddy water filter. (a) False (b) True
19. 19.🔮 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) it turns to sugar (d) no, salt passes through
20. 20.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
21. 21.⚖️ 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
22. 22.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) chaff from wheat grain (c) tea leaves from tea (d) salt from sea water
23. 23.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) the salt (d) nothing
24. 24.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) leaves pass through (d) tea stays behind
25. 25.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the water evaporates (d) the filter adds soap
26. 26.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) winnowing (d) sieving
27. 27.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
28. 28.True or false: gravel from fine sand is done by sieving. (a) True (b) False
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) a clean glass (d) a magnet
32. 32.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) cotton or cloth (c) yeast (d) a mirror
33. 33.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
34. 34.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
35. 35.True or false: bad grains from rice is done by evaporating. (a) False (b) True
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) muddy water (d) sand and pebbles
37. 37.True or false: small stones from dal is done by sieving. (a) True (b) False
38. 38.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
39. 39.True or false: bran from wheat flour is done by sieving. (a) False (b) True
40. 40.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed

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