Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 908 · 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 kept the same? (a) the filter material (b) the same glass (c) how clear the water is
2. 2.⚖️ 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 keep it the same (b) we measure it (c) we change it
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) sand and pebbles (c) muddy water (d) a clean glass
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a battery cell (d) cotton or cloth
6. 6.⚖️ 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 amount poured (c) how clear the water is
7. 7.⚖️ 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
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) nothing (d) the mud
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) a clean glass (d) cotton or cloth
11. 11.True or false: gravel from fine sand is done by winnowing. (a) False (b) True
12. 12.🫗 How do we separate mud from water? (a) sieving (b) handpicking (c) filtering (d) evaporating
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a mirror (d) a clean glass
14. 14.⚖️ 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 same muddy water (c) the filter material
15. 15.⚖️ 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) True (b) False
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a mirror (c) muddy water (d) cotton or cloth
18. 18.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
20. 20.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) sugar from sugar water (c) bad grains from rice (d) mud from water
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) yeast (d) cotton or cloth
22. 22.⚖️ 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
23. 23.🫗 Which of these is done by sieving? (a) mud from water (b) bran from wheat flour (c) small stones from dal (d) chaff from wheat grain
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the same muddy water (c) the same funnel (d) how clear the water is
25. 25.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) mud from water (c) small stones from dal (d) bran from wheat flour
26. 26.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
27. 27.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) lick your fingers (d) wash hands afterwards
28. 28.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
29. 29.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
30. 30.🫗 How do we separate gravel from fine sand? (a) sieving (b) handpicking (c) winnowing (d) filtering
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
32. 32.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
33. 33.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
34. 34.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
35. 35.🫗 How do we separate tea leaves from tea? (a) handpicking (b) evaporating (c) filtering (d) winnowing
36. 36.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.🫗 How do we separate chaff from wheat grain? (a) sieving (b) winnowing (c) evaporating (d) filtering
39. 39.⚖️ 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 same funnel (c) the filter material
40. 40.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed

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