Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 836 · 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 needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a magnet (d) a funnel
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) a balloon
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) yeast (b) a funnel (c) a clean glass (d) sand and pebbles
4. 4.🫗 How do we separate chaff from wheat grain? (a) filtering (b) winnowing (c) sieving (d) handpicking
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
6. 6.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a magnet (d) a funnel
7. 7.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
8. 8.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) sugar from sugar water (c) husk from rice grain (d) gravel from fine sand
9. 9.⚖️ 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 glass (c) the filter material (d) the same muddy water
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) muddy water (c) cotton or cloth (d) a magnet
11. 11.🧺 Which of these is needed for the muddy water filter? (a) a clean glass (b) a magnet (c) a battery cell (d) a mirror
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) muddy water (c) a clean glass (d) a funnel
13. 13.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
14. 14.True or false: gravel from fine sand is done by filtering. (a) True (b) False
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
17. 17.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
18. 18.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) lick your fingers (d) wipe hands on face
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) turmeric powder (c) sand and pebbles (d) a clean glass
22. 22.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
23. 23.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) clearer (d) salty
24. 24.True or false: bad grains from rice is done by filtering. (a) False (b) True
25. 25.🔍 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
26. 26.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
27. 27.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) small stones from dal (c) husk from rice grain (d) chaff from wheat grain
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same muddy water (c) how clear the water is
29. 29.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is sweet (d) clear water is hot
30. 30.⚖️ 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 keep it the same (c) we change it
31. 31.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) muddy water (d) yeast
32. 32.True or false: chaff from wheat grain is done by sieving. (a) True (b) False
33. 33.🫗 Which of these is done by sieving? (a) mud from water (b) husk from rice grain (c) bad grains from rice (d) gravel from fine sand
34. 34.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a clean glass (d) a battery cell
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) sand and pebbles (d) a battery cell
37. 37.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) how clear the water is (c) the same glass (d) the filter material
39. 39.🫗 How do we separate bad grains from rice? (a) evaporating (b) handpicking (c) filtering (d) sieving
40. 40.⚖️ 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

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