Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 961 · 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 balloon (c) cotton or cloth (d) a clean glass
2. 2.🫗 How do we separate husk from rice grain? (a) handpicking (b) winnowing (c) sieving (d) filtering
3. 3.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is sweet (c) clear water is salty (d) clear water is hot
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same funnel (d) the same muddy water
5. 5.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a magnet (d) a battery cell
6. 6.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a magnet (c) muddy water (d) sand and pebbles
8. 8.🫗 Which of these is done by sieving? (a) mud from water (b) bran from wheat flour (c) tea leaves from tea (d) bad grains from rice
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) yeast (d) a funnel
10. 10.True or false: tea leaves from tea is done by filtering. (a) True (b) False
11. 11.⚖️ 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
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the same funnel (d) the same glass
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
14. 14.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) tea leaves from tea (c) mud from water (d) small stones from dal
15. 15.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) nothing (c) the mud (d) the water
16. 16.🔮 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
17. 17.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
19. 19.⚖️ 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
20. 20.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) mud from water (c) gravel from fine sand (d) salt from sea water
21. 21.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
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 measure it (b) we change it (c) we keep it the same
24. 24.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
25. 25.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) it turns to sugar (d) no, salt passes through
26. 26.⚖️ 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
27. 27.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) bad grains from rice (c) bran from wheat flour (d) husk from rice grain
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a funnel (c) cotton or cloth (d) muddy water
29. 29.True or false: a magnet is not needed for the muddy water filter. (a) True (b) False
30. 30.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
31. 31.True or false: sugar from sugar water is done by evaporating. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: small stones from dal is done by filtering. (a) False (b) True
34. 34.True or false: small stones from dal is done by sieving. (a) False (b) True
35. 35.True or false: mud from water is done by sieving. (a) False (b) True
36. 36.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) wipe hands on face (c) lick your fingers (d) nothing is needed
37. 37.True or false: gravel from fine sand is done by filtering. (a) False (b) True
38. 38.⚖️ 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) True (b) False
39. 39.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False

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