Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 402 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) turmeric powder (c) a funnel (d) a clean glass
2. 2.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
3. 3.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) filtering (d) handpicking
4. 4.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the water (c) the mud (d) the salt
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it turns to sand (d) it sinks to the bottom
6. 6.🫗 Which of these is done by sieving? (a) salt from sea water (b) bran from wheat flour (c) tea leaves from tea (d) small stones from dal
7. 7.🫗 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
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
9. 9.🫗 How do we separate gravel from fine sand? (a) filtering (b) sieving (c) handpicking (d) evaporating
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
12. 12.🫗 How do we separate mud from water? (a) sieving (b) winnowing (c) filtering (d) handpicking
13. 13.🫗 How do we separate chaff from wheat grain? (a) filtering (b) evaporating (c) sieving (d) winnowing
14. 14.True or false: gravel from fine sand is done by winnowing. (a) True (b) False
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) muddy water (d) a funnel
16. 16.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
17. 17.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) wash hands afterwards (d) lick your fingers
18. 18.🫗 How do we separate sugar from sugar water? (a) winnowing (b) sieving (c) evaporating (d) filtering
19. 19.🔮 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) yes, all of it (d) it turns to sugar
20. 20.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
21. 21.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
22. 22.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
24. 24.⚖️ 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 funnel (c) the filter material (d) how clear the water is
25. 25.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
26. 26.⚖️ 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) the filter material (c) the same muddy water (d) how clear the water is
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a clean glass (d) a funnel
29. 29.True or false: chaff from wheat grain is done by handpicking. (a) False (b) True
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) salty (d) muddier
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) cotton or cloth (c) sand and pebbles (d) a funnel
34. 34.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a funnel (d) a balloon
35. 35.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
36. 36.⚖️ 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) False (b) True
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) a clean glass (d) a funnel
39. 39.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True

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