Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 97 · 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.⚖️ 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 amount poured (c) the filter material
2. 2.🫗 How do we separate bran from wheat flour? (a) handpicking (b) evaporating (c) sieving (d) winnowing
3. 3.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) germs are invisible (d) clear water is sweet
4. 4.⚖️ 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 change it (c) we measure it
5. 5.⚖️ 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) how clear the water is (c) the filter material (d) the amount poured
6. 6.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
7. 7.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
8. 8.🫗 How do we separate gravel from fine sand? (a) evaporating (b) sieving (c) filtering (d) winnowing
9. 9.🫗 How do we separate sugar from sugar water? (a) winnowing (b) evaporating (c) filtering (d) sieving
10. 10.True or false: bran from wheat flour is done by evaporating. (a) True (b) False
11. 11.⚖️ 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 keep it the same (b) we measure it (c) we change it
12. 12.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
13. 13.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the filter traps mud (d) the mud dissolves
14. 14.🫗 Which of these is done by evaporating? (a) chaff from wheat grain (b) sugar from sugar water (c) bad grains from rice (d) tea leaves from tea
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a magnet (d) muddy water
16. 16.True or false: sugar from sugar water is done by winnowing. (a) False (b) True
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) yeast (d) sand and pebbles
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) sand and pebbles (d) muddy water
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
21. 21.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) salt from sea water (c) small stones from dal (d) bran from wheat flour
22. 22.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
23. 23.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) no, germs may stay (d) yes, if it is cold
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
25. 25.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) cotton or cloth (c) a magnet (d) a mirror
26. 26.⚖️ 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) False (b) True
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) muddy water (d) sand and pebbles
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) muddy water (d) a balloon
29. 29.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a battery cell
30. 30.True or false: bran from wheat flour is done by winnowing. (a) True (b) False
31. 31.⚖️ 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 same glass
32. 32.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
33. 33.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
34. 34.⚖️ 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 amount poured (c) how clear the water is (d) the same funnel
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) turmeric powder (d) a clean glass
36. 36.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) tea leaves from tea (c) bran from wheat flour (d) husk from rice grain
37. 37.True or false: gravel from fine sand is done by sieving. (a) True (b) False
38. 38.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) hot (d) salty
39. 39.True or false: a mirror is needed for the muddy water filter. (a) True (b) False
40. 40.True or false: bran from wheat flour is done by sieving. (a) False (b) True

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