Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 962 · 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.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is hot (c) clear water is sweet (d) germs are invisible
3. 3.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
5. 5.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
6. 6.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
7. 7.⚖️ 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 same glass (c) the filter material (d) the same funnel
8. 8.⚖️ 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 same muddy water
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) a funnel (d) cotton or cloth
10. 10.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) handpicking (d) evaporating
11. 11.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) sand and pebbles (c) a funnel (d) muddy water
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) how clear the water is (c) the filter material
14. 14.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) salty (c) clearer (d) hot
15. 15.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
16. 16.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
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.⚖️ 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
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a magnet (d) cotton or cloth
20. 20.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) a funnel (d) turmeric powder
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) no, salt passes through (d) yes, all of it
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
24. 24.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
25. 25.⚖️ 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
26. 26.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bad grains from rice (c) gravel from fine sand (d) salt from sea water
27. 27.🫗 How do we separate gravel from fine sand? (a) handpicking (b) winnowing (c) filtering (d) sieving
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a clean glass (d) yeast
29. 29.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
30. 30.🧺 Which of these is not needed for the muddy water filter? (a) a magnet (b) a funnel (c) cotton or cloth (d) sand and pebbles
31. 31.True or false: turmeric powder is needed for the muddy water filter. (a) False (b) True
32. 32.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
33. 33.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it floats on top (c) it sinks to the bottom (d) it turns to sand
34. 34.🫗 How do we separate bran from wheat flour? (a) evaporating (b) handpicking (c) winnowing (d) sieving
35. 35.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) muddy water (d) turmeric powder
37. 37.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) turmeric powder
39. 39.🫗 Which of these is done by sieving? (a) bad grains from rice (b) tea leaves from tea (c) bran from wheat flour (d) mud from water
40. 40.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves stay behind (c) tea stays behind (d) leaves pass through

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