Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 399 · 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 filter material (c) the amount poured
2. 2.⚖️ 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
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🫗 How do we separate husk from rice grain? (a) winnowing (b) evaporating (c) sieving (d) filtering
5. 5.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
6. 6.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
7. 7.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
8. 8.True or false: gravel from fine sand is done by sieving. (a) False (b) True
9. 9.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) chaff from wheat grain (c) gravel from fine sand (d) bran from wheat flour
10. 10.🫗 Which of these is done by handpicking? (a) chaff from wheat grain (b) sugar from sugar water (c) bran from wheat flour (d) small stones from dal
11. 11.🫗 How do we separate bran from wheat flour? (a) sieving (b) evaporating (c) handpicking (d) filtering
12. 12.🫗 How do we separate small stones from dal? (a) sieving (b) filtering (c) evaporating (d) handpicking
13. 13.⚖️ 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
14. 14.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) leaves stay behind (d) both stay behind
15. 15.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) gravel from fine sand (c) mud from water (d) sugar from sugar water
16. 16.⚖️ 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
17. 17.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
18. 18.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
19. 19.True or false: mud from water is done by handpicking. (a) True (b) False
20. 20.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the filter material (c) the same glass (d) the amount poured
22. 22.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) winnowing (c) filtering (d) sieving
23. 23.⚖️ 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) False (b) True
24. 24.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
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 sugar (c) no, salt passes through (d) it turns to sand
26. 26.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) turmeric powder (c) yeast (d) a funnel
27. 27.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
29. 29.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) a mirror (d) cotton or cloth
30. 30.True or false: small stones from dal is done by handpicking. (a) False (b) True
31. 31.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
32. 32.🛟 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
33. 33.⚖️ 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
34. 34.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a funnel (d) cotton or cloth
36. 36.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) a balloon (d) sand and pebbles
38. 38.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) salt from sea water (c) bran from wheat flour (d) chaff from wheat grain
39. 39.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
40. 40.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it sinks to the bottom (c) it turns to sand (d) it dissolves

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