Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 471 · 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.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
2. 2.⚖️ 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) True (b) False
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a balloon (d) cotton or cloth
4. 4.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a funnel (c) a balloon (d) cotton or cloth
6. 6.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
7. 7.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) salt from sea water (c) gravel from fine sand (d) chaff from wheat grain
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) muddier (c) clearer (d) salty
9. 9.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) handpicking (d) evaporating
10. 10.🫗 How do we separate husk from rice grain? (a) sieving (b) handpicking (c) winnowing (d) filtering
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sugar (d) it turns to sand
12. 12.⚖️ 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) True (b) False
13. 13.🧺 Do we need yeast 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? What do we do with “the same glass”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) a battery cell (d) muddy water
16. 16.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
17. 17.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
18. 18.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
19. 19.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
20. 20.⚖️ 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) the filter material (c) the same muddy water (d) how clear the water is
21. 21.🫗 How do we separate gravel from fine sand? (a) filtering (b) winnowing (c) sieving (d) handpicking
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a clean glass (d) cotton or cloth
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) how clear the water is (b) the filter material (c) the same glass (d) the same funnel
24. 24.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bran from wheat flour (c) tea leaves from tea (d) sugar from sugar water
29. 29.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
30. 30.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) muddy water (d) a battery cell
32. 32.True or false: bad grains from rice is done by winnowing. (a) False (b) True
33. 33.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
34. 34.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
35. 35.True or false: salt from sea water is done by handpicking. (a) True (b) False
36. 36.⚖️ 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
37. 37.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
38. 38.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is sweet (d) clear water is hot
39. 39.🫗 Is filtered pond water safe to drink? (a) yes, always (b) no, germs may stay (c) yes, if it is clear (d) yes, if it is cold
40. 40.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed

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