Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 980 · 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.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) False (b) True
3. 3.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
4. 4.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a magnet (c) a battery cell (d) muddy water
5. 5.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
6. 6.🫗 Which of these is done by winnowing? (a) small stones from dal (b) salt from sea water (c) bran from wheat flour (d) husk from rice grain
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) yeast (d) muddy water
9. 9.True or false: tea leaves from tea is done by filtering. (a) True (b) False
10. 10.🫗 How do we separate salt from sea water? (a) evaporating (b) handpicking (c) filtering (d) sieving
11. 11.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
12. 12.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
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 amount poured (c) the filter material (d) how clear the water is
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
15. 15.🫗 How do we separate bad grains from rice? (a) evaporating (b) sieving (c) handpicking (d) winnowing
16. 16.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) sand and pebbles (d) a funnel
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
20. 20.⚖️ 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
21. 21.True or false: salt from sea water is done by handpicking. (a) True (b) False
22. 22.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a mirror (d) a clean glass
25. 25.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
26. 26.⚖️ 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
27. 27.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
30. 30.🫗 Which of these is done by filtering? (a) bad grains from rice (b) bran from wheat flour (c) tea leaves from tea (d) chaff from wheat grain
31. 31.True or false: small stones from dal is done by handpicking. (a) False (b) True
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) a clean glass (d) sand and pebbles
33. 33.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
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: mud from water is done by evaporating. (a) False (b) True
36. 36.⚖️ 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
37. 37.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) sand and pebbles (d) cotton or cloth
40. 40.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed

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