Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 411 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) yeast (d) a clean glass
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it floats on top (d) it dissolves
3. 3.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) yeast (c) a mirror (d) muddy water
4. 4.⚖️ 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) False (b) True
5. 5.🛟 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
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) True (b) False
7. 7.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) cotton or cloth (c) a funnel (d) muddy water
8. 8.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) mud from water (d) husk from rice grain
9. 9.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
10. 10.🔮 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
11. 11.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
13. 13.⚖️ 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
14. 14.⚖️ 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 funnel
15. 15.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter traps mud (c) the mud dissolves (d) the filter adds soap
16. 16.⚖️ 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) False (b) True
17. 17.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) muddy water (d) sand and pebbles
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 measure it (b) we change it (c) we keep it the same
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
21. 21.True or false: salt from sea water is done by filtering. (a) True (b) False
22. 22.🫗 Which of these is done by evaporating? (a) bad grains from rice (b) salt from sea water (c) gravel from fine sand (d) bran from wheat flour
23. 23.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
24. 24.🧺 Do we need turmeric powder 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? True or false: the amount poured is what we measure. (a) False (b) True
26. 26.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a magnet (c) a battery cell (d) sand and pebbles
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
29. 29.🫗 How do we separate bran from wheat flour? (a) evaporating (b) filtering (c) handpicking (d) sieving
30. 30.🫗 Which of these is done by winnowing? (a) mud from water (b) tea leaves from tea (c) sugar from sugar water (d) chaff from wheat grain
31. 31.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) salt from sea water (c) mud from water (d) bad grains from rice
32. 32.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) filtering (d) handpicking
33. 33.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
34. 34.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) small stones from dal (c) bad grains from rice (d) chaff from wheat grain
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) muddy water (d) a funnel
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) cotton or cloth (c) a magnet (d) a mirror
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) muddy water (d) a clean glass
39. 39.True or false: mud from water is done by filtering. (a) False (b) True
40. 40.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True

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