Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 719 · 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.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) handpicking (d) sieving
2. 2.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) clearer (c) salty (d) hot
3. 3.True or false: husk from rice grain is done by sieving. (a) True (b) False
4. 4.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
5. 5.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) a battery cell (d) sand and pebbles
7. 7.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
8. 8.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
9. 9.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it sinks to the bottom (d) it floats on top
10. 10.⚖️ 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) False (b) True
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a funnel (d) turmeric powder
14. 14.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the water evaporates (c) the mud dissolves (d) the filter adds soap
15. 15.🫗 How do we separate gravel from fine sand? (a) evaporating (b) winnowing (c) filtering (d) sieving
16. 16.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
17. 17.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) gravel from fine sand (c) tea leaves from tea (d) chaff from wheat grain
18. 18.⚖️ 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
19. 19.⚖️ 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 same muddy water (c) how clear the water is (d) the same funnel
20. 20.True or false: salt from sea water is done by filtering. (a) True (b) False
21. 21.⚖️ 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
22. 22.⚖️ 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) how clear the water is (c) the amount poured (d) the filter material
23. 23.True or false: tea leaves from tea is done by sieving. (a) True (b) False
24. 24.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) tea leaves from tea (c) husk from rice grain (d) bran from wheat flour
25. 25.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
26. 26.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
27. 27.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
28. 28.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
29. 29.🔮 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) yes, all of it (d) no, salt passes through
30. 30.⚖️ 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 muddy water
31. 31.🫗 How do we separate husk from rice grain? (a) handpicking (b) sieving (c) evaporating (d) winnowing
32. 32.True or false: salt from sea water is done by winnowing. (a) False (b) True
33. 33.⚖️ 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 amount poured
34. 34.⚖️ 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
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) a clean glass (d) sand and pebbles
36. 36.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
37. 37.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
38. 38.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
39. 39.🫗 How do we separate tea leaves from tea? (a) winnowing (b) filtering (c) handpicking (d) sieving
40. 40.⚖️ 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

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