Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 843 · 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 battery cell (b) a balloon (c) a funnel (d) turmeric powder
2. 2.⚖️ 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) the same funnel (d) the same glass
3. 3.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) sand and pebbles (c) muddy water (d) a clean glass
4. 4.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a battery cell (c) turmeric powder (d) yeast
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
8. 8.True or false: a magnet is not 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 muddy water is the one thing we change. (a) False (b) True
10. 10.⚖️ 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
11. 11.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
12. 12.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) yeast (c) a clean glass (d) turmeric powder
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) cotton or cloth (d) a mirror
15. 15.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) mud from water (c) bran from wheat flour (d) gravel from fine sand
16. 16.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a magnet (d) muddy water
18. 18.🔮 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
19. 19.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
20. 20.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
21. 21.🫗 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
22. 22.🫗 Which of these is done by filtering? (a) husk from rice grain (b) tea leaves from tea (c) bran from wheat flour (d) salt from sea water
23. 23.True or false: gravel from fine sand is done by sieving. (a) False (b) True
24. 24.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
25. 25.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it turns to sand (c) it floats on top (d) it dissolves
26. 26.⚖️ 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
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) muddy water (d) sand and pebbles
28. 28.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) muddy water (d) turmeric powder
30. 30.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
31. 31.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
32. 32.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) winnowing (d) filtering
33. 33.True or false: husk from rice grain is done by evaporating. (a) True (b) False
34. 34.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
35. 35.⚖️ 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 filter material (c) the same glass
36. 36.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
37. 37.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) tea leaves from tea (c) bran from wheat flour (d) small stones from dal
38. 38.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) filtering (d) sieving
39. 39.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the amount poured (d) the same funnel

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