Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 401 · 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 needed for the muddy water filter? (a) a balloon (b) a magnet (c) muddy water (d) a mirror
2. 2.🔮 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
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
4. 4.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
6. 6.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) husk from rice grain (c) mud from water (d) sugar from sugar water
7. 7.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves stay behind (c) both stay behind (d) leaves pass through
8. 8.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) a clean glass (d) muddy water
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) cotton or cloth (d) a balloon
14. 14.🫗 Which of these is done by sieving? (a) bad grains from rice (b) salt from sea water (c) bran from wheat flour (d) small stones from dal
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) a magnet (d) a clean glass
16. 16.🛟 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
17. 17.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) no, salt passes through (c) it turns to sugar (d) yes, all of it
18. 18.🫗 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
19. 19.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) muddy water (c) a magnet (d) sand and pebbles
21. 21.⚖️ 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 glass (c) the same muddy water (d) the same funnel
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
23. 23.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
24. 24.⚖️ 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) False (b) True
25. 25.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) gravel from fine sand (c) salt from sea water (d) chaff from wheat grain
26. 26.True or false: husk from rice grain is done by winnowing. (a) True (b) False
27. 27.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
28. 28.🫗 How do we separate tea leaves from tea? (a) winnowing (b) evaporating (c) filtering (d) handpicking
29. 29.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
30. 30.🫗 How do we separate mud from water? (a) handpicking (b) winnowing (c) sieving (d) filtering
31. 31.⚖️ 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 keep it the same (c) we measure it
32. 32.⚖️ 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 measure it (c) we change it
33. 33.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) yeast (d) a clean glass
35. 35.🫗 Which of these is done by winnowing? (a) mud from water (b) small stones from dal (c) gravel from fine sand (d) chaff from wheat grain
36. 36.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) yeast (d) a mirror
37. 37.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) a funnel (d) a clean glass
38. 38.True or false: mud from water is done by filtering. (a) True (b) False
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 amount poured (b) how clear the water is (c) the same muddy water (d) the filter material
40. 40.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) mud from water (c) husk from rice grain (d) salt from sea water

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