Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 633 · 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 chaff from wheat grain? (a) filtering (b) winnowing (c) handpicking (d) evaporating
2. 2.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
4. 4.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
5. 5.🫗 How do we separate small stones from dal? (a) handpicking (b) evaporating (c) filtering (d) sieving
6. 6.True or false: gravel from fine sand is done by filtering. (a) False (b) True
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) muddy water (c) a funnel (d) sand and pebbles
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.⚖️ 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
10. 10.True or false: mud from water is done by handpicking. (a) True (b) False
11. 11.🫗 How do we separate bad grains from rice? (a) filtering (b) sieving (c) winnowing (d) handpicking
12. 12.🛟 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
13. 13.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
14. 14.⚖️ 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
15. 15.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
16. 16.⚖️ 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
17. 17.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the salt (c) the mud (d) the water
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a battery cell (d) muddy water
19. 19.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
20. 20.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
21. 21.🛟 Why should you never drink water just because it looks clear? (a) germs are invisible (b) clear water is salty (c) clear water is hot (d) clear water is sweet
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
23. 23.True or false: gravel from fine sand is done by handpicking. (a) False (b) True
24. 24.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
25. 25.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the mud dissolves (d) the water evaporates
26. 26.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
27. 27.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) bad grains from rice (c) chaff from wheat grain (d) tea leaves from tea
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a battery cell (c) a funnel (d) sand and pebbles
29. 29.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is cold (c) no, germs may stay (d) yes, if it is clear
30. 30.⚖️ 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
31. 31.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) muddier (d) hot
32. 32.True or false: mud from water is done by filtering. (a) True (b) False
33. 33.⚖️ 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
34. 34.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) a balloon (d) a funnel
36. 36.⚖️ 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 same muddy water (c) the same glass (d) the filter material
37. 37.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) bad grains from rice (c) gravel from fine sand (d) bran from wheat flour
38. 38.🫗 How do we separate tea leaves from tea? (a) sieving (b) filtering (c) handpicking (d) winnowing
39. 39.🫗 How do we separate mud from water? (a) filtering (b) evaporating (c) handpicking (d) sieving
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a magnet (d) a funnel

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