Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 571 · 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.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the mud dissolves (d) the filter traps mud
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 glass (b) the same muddy water (c) the filter material (d) the same funnel
3. 3.🫗 How do we separate mud from water? (a) evaporating (b) filtering (c) handpicking (d) winnowing
4. 4.🛟 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
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
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 measure it (c) we keep it the same
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
9. 9.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) cotton or cloth (d) sand and pebbles
11. 11.True or false: husk from rice grain is done by filtering. (a) True (b) False
12. 12.⚖️ 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 funnel (c) the filter material (d) the amount poured
13. 13.⚖️ 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
14. 14.🫗 How do we separate salt from sea water? (a) evaporating (b) handpicking (c) sieving (d) winnowing
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) cotton or cloth (d) a funnel
16. 16.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) winnowing (c) evaporating (d) sieving
17. 17.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
18. 18.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, if it is clear (c) yes, always (d) no, germs may stay
19. 19.⚖️ 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
20. 20.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
21. 21.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) a clean glass
23. 23.⚖️ 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) True (b) False
24. 24.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) winnowing (d) handpicking
25. 25.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) chaff from wheat grain (c) gravel from fine sand (d) sugar from sugar water
26. 26.True or false: husk from rice grain is done by winnowing. (a) True (b) False
27. 27.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
29. 29.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) sugar from sugar water (c) small stones from dal (d) bran from wheat flour
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a balloon (c) a clean glass (d) a battery cell
31. 31.🫗 How do we separate sugar from sugar water? (a) evaporating (b) winnowing (c) sieving (d) filtering
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a mirror (c) cotton or cloth (d) sand and pebbles
33. 33.⚖️ 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 funnel
34. 34.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
35. 35.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
36. 36.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
37. 37.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) no, salt passes through (d) yes, all of it
38. 38.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed

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