Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 921 · 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 the one thing we change? (a) the same funnel (b) the filter material (c) the same muddy water (d) the same glass
2. 2.🧺 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
3. 3.⚖️ 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 measure it (c) we keep it the same
4. 4.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) cotton or cloth (c) a funnel (d) a magnet
5. 5.🫗 How do we separate chaff from wheat grain? (a) filtering (b) winnowing (c) sieving (d) handpicking
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a mirror
8. 8.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
10. 10.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) gravel from fine sand (c) sugar from sugar water (d) mud from water
11. 11.⚖️ 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
12. 12.🔍 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 dissolves (d) it sinks to the bottom
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) muddy water (c) yeast (d) a battery cell
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same glass (c) how clear the water is (d) the same muddy water
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a funnel (c) a magnet (d) turmeric powder
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) a battery cell (d) muddy water
17. 17.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
18. 18.⚖️ 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) how clear the water is (c) the same funnel
19. 19.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
20. 20.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the water (d) the salt
21. 21.🫗 Which of these is done by handpicking? (a) mud from water (b) small stones from dal (c) bran from wheat flour (d) gravel from fine sand
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a battery cell (d) muddy water
23. 23.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
24. 24.True or false: bad grains from rice is done by handpicking. (a) False (b) True
25. 25.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ 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
27. 27.⚖️ 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 change it (c) we keep it the same
28. 28.True or false: small stones from dal is done by evaporating. (a) True (b) False
29. 29.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
30. 30.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
31. 31.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
33. 33.⚖️ 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) True (b) False
34. 34.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a clean glass (c) a funnel (d) sand and pebbles
35. 35.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a mirror (c) a balloon (d) turmeric powder
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
37. 37.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a balloon (c) yeast (d) a battery cell
39. 39.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) no, germs may stay (d) yes, always
40. 40.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed

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