Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 829 · 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) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) muddy water
2. 2.⚖️ 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) True (b) False
3. 3.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) sand and pebbles (d) cotton or cloth
5. 5.⚖️ 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 change it (c) we measure it
6. 6.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
7. 7.🫗 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
8. 8.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) muddy water (d) a balloon
9. 9.⚖️ 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
10. 10.⚖️ 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
11. 11.⚖️ 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) False (b) True
12. 12.🛟 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
13. 13.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
14. 14.⚖️ 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
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
16. 16.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
17. 17.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) chaff from wheat grain (c) small stones from dal (d) salt from sea water
18. 18.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) sugar from sugar water (c) husk from rice grain (d) bran from wheat flour
19. 19.True or false: bran from wheat flour is done by sieving. (a) True (b) False
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) a clean glass (d) muddy water
21. 21.⚖️ 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
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) hot (d) clearer
23. 23.🫗 Which of these is done by filtering? (a) mud from water (b) bad grains from rice (c) salt from sea water (d) husk from rice grain
24. 24.True or false: gravel from fine sand is done by sieving. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a magnet (d) muddy water
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
28. 28.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) salt from sea water (c) bran from wheat flour (d) bad grains from rice
29. 29.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: yeast is needed for the muddy water filter. (a) False (b) True
31. 31.🫗 Which of these is done by sieving? (a) husk from rice grain (b) mud from water (c) gravel from fine sand (d) sugar from sugar water
32. 32.🔮 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
33. 33.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
35. 35.⚖️ 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
36. 36.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
37. 37.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
38. 38.🫗 How do we separate sugar from sugar water? (a) winnowing (b) sieving (c) evaporating (d) filtering
39. 39.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True

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