Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 331 · 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.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
2. 2.True or false: mud from water is done by filtering. (a) True (b) False
3. 3.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) bad grains from rice (c) salt from sea water (d) small stones from dal
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a battery cell (c) sand and pebbles (d) muddy water
5. 5.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
6. 6.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
7. 7.⚖️ 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
8. 8.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) sand and pebbles (d) muddy water
10. 10.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
11. 11.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
12. 12.🧺 Do we need cotton or cloth 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 kept the same? (a) the same glass (b) how clear the water is (c) the filter material
14. 14.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
15. 15.🛟 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
16. 16.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) a funnel (c) cotton or cloth (d) sand and pebbles
17. 17.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) sand and pebbles (c) yeast (d) a battery cell
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) salty (d) hot
20. 20.⚖️ 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
21. 21.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) husk from rice grain (c) gravel from fine sand (d) sugar from sugar water
22. 22.⚖️ 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 muddy water (c) how clear the water is (d) the same funnel
23. 23.🫗 How do we separate mud from water? (a) filtering (b) sieving (c) winnowing (d) evaporating
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) a funnel (d) a mirror
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) muddy water (d) a funnel
27. 27.⚖️ 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 amount poured (c) the same glass (d) the filter material
28. 28.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a balloon (d) muddy water
30. 30.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
31. 31.⚖️ 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
32. 32.True or false: small stones from dal is done by handpicking. (a) False (b) True
33. 33.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) mud from water (c) small stones from dal (d) tea leaves from tea
34. 34.True or false: salt from sea water is done by evaporating. (a) False (b) True
35. 35.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
37. 37.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
38. 38.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
39. 39.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
40. 40.🧺 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) a clean glass

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