Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 703 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it dissolves (c) it floats on top (d) it turns to sand
2. 2.True or false: salt from sea water is done by winnowing. (a) True (b) False
3. 3.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) winnowing (d) filtering
4. 4.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.True or false: yeast is not needed for the muddy water filter. (a) False (b) True
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 clean glass is not needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) cotton or cloth (c) a balloon (d) a funnel
11. 11.⚖️ 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
12. 12.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) winnowing (d) sieving
13. 13.🔮 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
14. 14.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
15. 15.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
16. 16.⚖️ 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
17. 17.True or false: salt from sea water is done by handpicking. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ 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 funnel (b) the filter material (c) the same muddy water (d) the same glass
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) a funnel (c) a clean glass (d) muddy water
21. 21.⚖️ 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 change it (c) we measure it
22. 22.🫗 How do we separate bad grains from rice? (a) sieving (b) filtering (c) handpicking (d) winnowing
23. 23.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
24. 24.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
26. 26.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) yes, if it is clear (d) no, germs may stay
27. 27.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a battery cell (c) cotton or cloth (d) a clean glass
28. 28.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) sand and pebbles (d) a clean glass
30. 30.🫗 How do we separate small stones from dal? (a) sieving (b) evaporating (c) winnowing (d) handpicking
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a funnel (d) a battery cell
32. 32.True or false: mud from water is done by filtering. (a) True (b) False
33. 33.True or false: salt from sea water is done by sieving. (a) True (b) False
34. 34.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) yeast (d) muddy water
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) turmeric powder (c) sand and pebbles (d) a funnel
37. 37.🫗 Which of these is done by sieving? (a) husk from rice grain (b) gravel from fine sand (c) bad grains from rice (d) salt from sea water
38. 38.True or false: bran from wheat flour is done by sieving. (a) True (b) False
39. 39.⚖️ 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) False (b) True
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 measure it (b) we keep it the same (c) we change it

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