Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 91 · 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 done by handpicking? (a) gravel from fine sand (b) mud from water (c) bad grains from rice (d) husk from rice grain
2. 2.⚖️ 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 glass (b) the same muddy water (c) how clear the water is (d) the filter material
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? True or false: the same muddy water is what we measure. (a) False (b) True
5. 5.🫗 How do we separate mud from water? (a) sieving (b) handpicking (c) filtering (d) evaporating
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a battery cell (d) cotton or cloth
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) how clear the water is (c) the same funnel (d) the same muddy water
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) muddy water (d) a funnel
11. 11.🫗 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
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) yeast (c) muddy water (d) sand and pebbles
13. 13.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
14. 14.⚖️ 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 funnel
15. 15.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
16. 16.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) yes, all of it (d) no, salt passes through
17. 17.True or false: mud from water is done by filtering. (a) False (b) True
18. 18.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) salt from sea water (c) chaff from wheat grain (d) bran from wheat flour
19. 19.True or false: small stones from dal is done by winnowing. (a) False (b) True
20. 20.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it sinks to the bottom (d) it dissolves
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a balloon (d) yeast
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a magnet (d) a funnel
24. 24.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
26. 26.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
27. 27.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) turmeric powder (c) cotton or cloth (d) yeast
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a mirror (d) a clean glass
30. 30.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
31. 31.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
32. 32.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the salt (c) the mud (d) nothing
33. 33.True or false: mud from water is done by handpicking. (a) True (b) False
34. 34.🔮 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
35. 35.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
36. 36.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) chaff from wheat grain (c) tea leaves from tea (d) salt from sea water
37. 37.🫗 Which of these is done by sieving? (a) bad grains from rice (b) husk from rice grain (c) mud from water (d) gravel from fine sand
38. 38.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same

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