Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 975 · 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.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a battery cell
3. 3.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it floats on top (d) it dissolves
4. 4.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
5. 5.🫗 How do we separate mud from water? (a) evaporating (b) winnowing (c) filtering (d) sieving
6. 6.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter traps mud (c) the filter adds soap (d) the water evaporates
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a magnet (c) muddy water (d) a funnel
8. 8.🔮 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
9. 9.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) cotton or cloth (d) yeast
10. 10.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
11. 11.True or false: chaff from wheat grain is done by filtering. (a) False (b) True
12. 12.🫗 How do we separate husk from rice grain? (a) handpicking (b) sieving (c) filtering (d) winnowing
13. 13.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
15. 15.🫗 How do we separate small stones from dal? (a) handpicking (b) winnowing (c) sieving (d) filtering
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) a clean glass (d) a battery cell
17. 17.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
18. 18.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
19. 19.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
20. 20.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) turmeric powder (d) sand and pebbles
21. 21.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
22. 22.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
23. 23.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.True or false: husk from rice grain is done by sieving. (a) False (b) True
26. 26.⚖️ 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 same glass (c) the filter material
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
28. 28.🧺 Which of these is needed for the muddy water filter? (a) cotton or cloth (b) a magnet (c) a battery cell (d) a mirror
29. 29.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) a funnel (c) sand and pebbles (d) muddy water
31. 31.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) yeast (c) sand and pebbles (d) a funnel
33. 33.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) mud from water (c) gravel from fine sand (d) sugar from sugar water
34. 34.True or false: salt from sea water is done by evaporating. (a) False (b) True
35. 35.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
36. 36.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
37. 37.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) yeast (c) a mirror (d) a magnet
39. 39.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
40. 40.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed

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