Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 140 · 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) cotton or cloth (d) a battery cell
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a magnet (d) muddy water
6. 6.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
7. 7.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the mud (d) the water
8. 8.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a clean glass (d) a mirror
10. 10.True or false: bad grains from rice is done by handpicking. (a) False (b) True
11. 11.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
12. 12.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
13. 13.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
14. 14.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
15. 15.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, if it is clear (d) yes, always
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) turmeric powder (d) muddy water
18. 18.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
19. 19.True or false: bran from wheat flour is done by sieving. (a) False (b) True
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a balloon
21. 21.⚖️ 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
22. 22.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
23. 23.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) handpicking (d) sieving
24. 24.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
25. 25.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) nothing is needed (d) lick your fingers
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) muddy water (d) a clean glass
28. 28.True or false: salt from sea water is done by evaporating. (a) False (b) True
29. 29.⚖️ 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 glass (c) the filter material (d) how clear the water is
30. 30.🫗 How do we separate gravel from fine sand? (a) sieving (b) evaporating (c) handpicking (d) winnowing
31. 31.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
34. 34.🫗 Which of these is done by winnowing? (a) small stones from dal (b) bran from wheat flour (c) husk from rice grain (d) sugar from sugar water
35. 35.🔮 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) it turns to sugar (d) yes, all of it
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a battery cell (c) muddy water (d) cotton or cloth
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) a clean glass (d) cotton or cloth
39. 39.True or false: chaff from wheat grain is done by evaporating. (a) False (b) True
40. 40.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) germs are invisible (d) clear water is sweet

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