Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 432 · 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: husk from rice grain is done by sieving. (a) True (b) False
2. 2.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it turns to sand (d) it sinks to the bottom
3. 3.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
6. 6.🛟 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
7. 7.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
8. 8.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
9. 9.True or false: bran from wheat flour is done by handpicking. (a) True (b) False
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same funnel (c) the same glass (d) how clear the water is
11. 11.True or false: husk from rice grain is done by filtering. (a) True (b) False
12. 12.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
13. 13.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) bran from wheat flour (c) salt from sea water (d) small stones from dal
14. 14.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) muddy water (c) a balloon (d) turmeric powder
15. 15.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) muddy water (c) a funnel (d) yeast
16. 16.True or false: sand and pebbles is not needed for the muddy water filter. (a) True (b) False
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) muddy water
19. 19.🧺 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
20. 20.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
21. 21.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
22. 22.🛟 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
23. 23.⚖️ 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 amount poured (c) the filter material
24. 24.True or false: a funnel is needed for the muddy water filter. (a) False (b) True
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) a mirror
26. 26.⚖️ 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
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) hot (c) muddier (d) salty
28. 28.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) husk from rice grain (c) chaff from wheat grain (d) sugar from sugar water
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) False (b) True
30. 30.True or false: gravel from fine sand is done by evaporating. (a) True (b) False
31. 31.🫗 Which of these is done by winnowing? (a) chaff from wheat grain (b) bran from wheat flour (c) gravel from fine sand (d) sugar from sugar water
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) turmeric powder (d) cotton or cloth
34. 34.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
35. 35.🫗 How do we separate tea leaves from tea? (a) filtering (b) evaporating (c) handpicking (d) winnowing
36. 36.⚖️ 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) True (b) False
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we change it (c) we keep it the same
38. 38.⚖️ 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) the amount poured (c) the filter material (d) the same glass
39. 39.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the filter adds soap (c) the mud dissolves (d) the filter traps mud
40. 40.🫗 Which of these is done by filtering? (a) small stones from dal (b) gravel from fine sand (c) bran from wheat flour (d) tea leaves from tea

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