Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 860 · 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 not needed for the muddy water filter? (a) a balloon (b) a funnel (c) sand and pebbles (d) muddy water
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) tea leaves from tea (d) gravel from fine sand
4. 4.🫗 Which of these is done by sieving? (a) mud from water (b) salt from sea water (c) bran from wheat flour (d) small stones from dal
5. 5.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
6. 6.⚖️ 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
7. 7.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
8. 8.🛟 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
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.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
12. 12.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
13. 13.⚖️ 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) how clear the water is
14. 14.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) muddy water (d) a balloon
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
17. 17.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is cold (c) yes, if it is clear (d) yes, always
18. 18.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) sand and pebbles (c) yeast (d) a mirror
19. 19.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a balloon (d) a clean glass
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🫗 Which of these is done by evaporating? (a) small stones from dal (b) gravel from fine sand (c) tea leaves from tea (d) salt from sea water
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) cotton or cloth (c) a funnel (d) a clean glass
23. 23.🫗 How do we separate salt from sea water? (a) handpicking (b) winnowing (c) evaporating (d) sieving
24. 24.🫗 Which of these is done by sieving? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) chaff from wheat grain
25. 25.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) nothing (c) the salt (d) the water
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) turmeric powder (d) muddy water
27. 27.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
29. 29.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
30. 30.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
31. 31.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a funnel (d) turmeric powder
33. 33.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) sugar from sugar water (c) gravel from fine sand (d) mud from water
34. 34.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
35. 35.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) sand and pebbles (d) yeast
37. 37.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter traps mud (d) the filter adds soap
38. 38.🫗 How do we separate bran from wheat flour? (a) sieving (b) handpicking (c) filtering (d) evaporating
39. 39.🫗 How do we separate tea leaves from tea? (a) handpicking (b) sieving (c) evaporating (d) filtering
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed

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