Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 33 · 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.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) muddy water (c) a funnel (d) cotton or cloth
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a magnet (d) sand and pebbles
4. 4.⚖️ 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
5. 5.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) yeast
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) how clear the water is (c) the filter material (d) the same glass
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.True or false: bad grains from rice is done by sieving. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the filter material (c) how clear the water is (d) the same glass
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
12. 12.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
13. 13.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
14. 14.⚖️ 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
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) sand and pebbles (d) cotton or cloth
16. 16.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) husk from rice grain (c) small stones from dal (d) salt from sea water
17. 17.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) handpicking (d) filtering
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a funnel (c) sand and pebbles (d) muddy water
19. 19.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 Which of these is done by filtering? (a) husk from rice grain (b) bran from wheat flour (c) gravel from fine sand (d) mud from water
21. 21.⚖️ 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) True (b) False
22. 22.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
23. 23.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) gravel from fine sand (c) mud from water (d) bad grains from rice
24. 24.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) sieving (d) evaporating
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a mirror (d) a funnel
26. 26.⚖️ 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
27. 27.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) leaves stay behind (d) tea stays behind
28. 28.⚖️ 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) True (b) False
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
31. 31.True or false: tea leaves from tea is done by winnowing. (a) False (b) True
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) sand and pebbles (d) muddy water
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a funnel (d) cotton or cloth
34. 34.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) yeast (d) cotton or cloth
35. 35.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves
36. 36.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
38. 38.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bran from wheat flour (c) small stones from dal (d) mud from water
39. 39.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a mirror (c) turmeric powder (d) a clean glass

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