Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 38 · 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.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) yeast (c) muddy water (d) a magnet
2. 2.⚖️ 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
3. 3.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
4. 4.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) False (b) True
6. 6.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the filter material (c) the same muddy water (d) how clear the water is
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: bran from wheat flour is done by sieving. (a) False (b) True
11. 11.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) a magnet (d) turmeric powder
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
13. 13.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
14. 14.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
15. 15.True or false: mud from water is done by filtering. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) a clean glass (c) a funnel (d) sand and pebbles
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
20. 20.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) cotton or cloth (c) turmeric powder (d) a mirror
21. 21.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) the amount poured (d) the same funnel
23. 23.⚖️ 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
24. 24.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) tea leaves from tea (c) chaff from wheat grain (d) bad grains from rice
25. 25.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) sieving (d) evaporating
26. 26.🫗 Which of these is done by evaporating? (a) bran from wheat flour (b) salt from sea water (c) chaff from wheat grain (d) gravel from fine sand
27. 27.⚖️ 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
28. 28.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
30. 30.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
31. 31.🔮 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) it turns to sand (d) no, salt passes through
32. 32.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) handpicking (d) filtering
33. 33.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
34. 34.🔮 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
35. 35.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
36. 36.🫗 Which of these is done by handpicking? (a) small stones from dal (b) sugar from sugar water (c) chaff from wheat grain (d) gravel from fine sand
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a balloon (c) cotton or cloth (d) sand and pebbles
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it dissolves (d) it turns to sand
40. 40.🫗 How do we separate mud from water? (a) evaporating (b) handpicking (c) winnowing (d) filtering

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