Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 170 · 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.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) bran from wheat flour (d) husk from rice grain
2. 2.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
3. 3.True or false: salt from sea water is done by evaporating. (a) False (b) True
4. 4.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) clear water is salty (d) germs are invisible
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 keep it the same (b) we measure it (c) we change it
6. 6.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
7. 7.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
8. 8.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) muddy water (c) cotton or cloth (d) a battery cell
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the amount poured (b) the same funnel (c) the filter material (d) how clear the water is
11. 11.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a magnet (d) sand and pebbles
13. 13.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
14. 14.⚖️ 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
15. 15.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) the filter material (c) the same muddy water (d) how clear the water is
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
18. 18.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
19. 19.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) a mirror (d) cotton or cloth
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a funnel (b) a magnet (c) turmeric powder (d) yeast
22. 22.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
23. 23.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
24. 24.⚖️ 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) the filter material (c) how clear the water is
25. 25.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) winnowing (d) filtering
26. 26.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a clean glass (c) yeast (d) muddy water
29. 29.🫗 How do we separate mud from water? (a) winnowing (b) sieving (c) filtering (d) handpicking
30. 30.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
32. 32.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) mud from water (c) gravel from fine sand (d) chaff from wheat grain
33. 33.🫗 How do we separate salt from sea water? (a) filtering (b) evaporating (c) winnowing (d) handpicking
34. 34.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) evaporating (d) filtering
35. 35.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
36. 36.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
37. 37.🫗 Which of these is done by winnowing? (a) small stones from dal (b) tea leaves from tea (c) chaff from wheat grain (d) bran from wheat flour
38. 38.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
39. 39.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
40. 40.True or false: gravel from fine sand is done by sieving. (a) False (b) True

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