Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 801 · 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) a funnel (c) a balloon (d) cotton or cloth
2. 2.⚖️ 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
3. 3.⚖️ 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 muddy water (b) the filter material (c) the amount poured (d) how clear the water is
4. 4.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the filter adds soap (d) the mud dissolves
5. 5.🫗 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
6. 6.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a funnel (c) turmeric powder (d) a balloon
8. 8.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) clear water is hot (d) germs are invisible
9. 9.🫗 Which of these is done by handpicking? (a) tea leaves from tea (b) small stones from dal (c) mud from water (d) gravel from fine sand
10. 10.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
11. 11.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
12. 12.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) both stay behind (c) tea stays behind (d) leaves pass through
13. 13.⚖️ 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 measure it (c) we keep it the same
14. 14.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a clean glass (c) turmeric powder (d) yeast
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) turmeric powder (d) sand and pebbles
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a mirror (c) a magnet (d) cotton or cloth
17. 17.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
18. 18.⚖️ 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
19. 19.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) winnowing (d) filtering
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) yeast
21. 21.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) yes, all of it (c) it turns to sand (d) no, salt passes through
23. 23.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
24. 24.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) the same funnel (c) the same glass (d) how clear the water is
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a magnet
28. 28.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) wipe hands on face (d) nothing is needed
29. 29.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
30. 30.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
31. 31.🫗 How do we separate mud from water? (a) winnowing (b) handpicking (c) evaporating (d) filtering
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) cotton or cloth (d) muddy water
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
34. 34.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
35. 35.True or false: bad grains from rice is done by winnowing. (a) True (b) False
36. 36.⚖️ 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
37. 37.🫗 How do we separate chaff from wheat grain? (a) sieving (b) evaporating (c) winnowing (d) handpicking
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) turmeric powder (d) a funnel
39. 39.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) turmeric powder (d) a balloon
40. 40.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand

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