Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 845 · 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 not needed for the muddy water filter? (a) muddy water (b) a funnel (c) sand and pebbles (d) a magnet
2. 2.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the filter adds soap (d) the mud dissolves
3. 3.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
6. 6.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
7. 7.🫗 How do we separate small stones from dal? (a) winnowing (b) sieving (c) handpicking (d) filtering
8. 8.🔮 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
9. 9.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, if it is cold (d) yes, always
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) turmeric powder (c) a clean glass (d) sand and pebbles
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the filter material (c) the same glass (d) the same funnel
12. 12.True or false: husk from rice grain is done by winnowing. (a) True (b) False
13. 13.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
14. 14.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
15. 15.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) it turns to sugar (d) no, salt passes through
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) yeast (c) cotton or cloth (d) a clean glass
19. 19.⚖️ 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
20. 20.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) a funnel (c) cotton or cloth (d) a mirror
21. 21.⚖️ 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 keep it the same (c) we change it
22. 22.⚖️ 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 change it (c) we measure it
23. 23.True or false: bad grains from rice is done by filtering. (a) True (b) False
24. 24.🫗 How do we separate gravel from fine sand? (a) sieving (b) filtering (c) evaporating (d) winnowing
25. 25.🫗 How do we separate tea leaves from tea? (a) winnowing (b) evaporating (c) filtering (d) sieving
26. 26.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
27. 27.🫗 How do we separate husk from rice grain? (a) handpicking (b) evaporating (c) winnowing (d) filtering
28. 28.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) bran from wheat flour (d) husk from rice grain
29. 29.⚖️ 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
30. 30.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
31. 31.⚖️ 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) the same muddy water (c) how clear the water is (d) the amount poured
32. 32.🫗 Which of these is done by filtering? (a) small stones from dal (b) salt from sea water (c) sugar from sugar water (d) tea leaves from tea
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) cotton or cloth (c) a clean glass (d) a funnel
34. 34.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it dissolves (d) it floats on top
35. 35.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we keep it the same (c) we measure it
37. 37.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
38. 38.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) bran from wheat flour (c) bad grains from rice (d) mud from water
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a balloon
40. 40.True or false: gravel from fine sand is done by sieving. (a) True (b) False

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