Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 640 · 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.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
2. 2.🫗 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
3. 3.⚖️ 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) how clear the water is (c) the same funnel
4. 4.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
5. 5.⚖️ 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) how clear the water is (c) the same funnel (d) the filter material
6. 6.True or false: tea leaves from tea is done by handpicking. (a) False (b) True
7. 7.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
8. 8.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
12. 12.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) nothing is needed (d) wash hands afterwards
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a clean glass (d) a balloon
14. 14.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) bad grains from rice (c) tea leaves from tea (d) sugar from sugar water
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) a battery cell (d) cotton or cloth
16. 16.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same glass (c) the same muddy water (d) the filter material
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
18. 18.True or false: a mirror is needed for the muddy water filter. (a) False (b) True
19. 19.🫗 How do we separate small stones from dal? (a) filtering (b) handpicking (c) evaporating (d) sieving
20. 20.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a magnet (d) a funnel
22. 22.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
23. 23.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is hot (d) clear water is salty
24. 24.🫗 Which of these is done by filtering? (a) small stones from dal (b) gravel from fine sand (c) tea leaves from tea (d) husk from rice grain
25. 25.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a magnet (d) sand and pebbles
27. 27.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it sinks to the bottom (b) it floats on top (c) it turns to sand (d) it dissolves
28. 28.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) gravel from fine sand (c) salt from sea water (d) small stones from dal
29. 29.🫗 How do we separate chaff from wheat grain? (a) filtering (b) handpicking (c) sieving (d) winnowing
30. 30.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) turmeric powder (d) a magnet
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) a mirror (d) a funnel
32. 32.🫗 How do we separate husk from rice grain? (a) evaporating (b) sieving (c) handpicking (d) winnowing
33. 33.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
34. 34.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a magnet (b) a mirror (c) a battery cell (d) cotton or cloth
36. 36.⚖️ 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
37. 37.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) muddier (c) hot (d) salty
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a magnet (c) a clean glass (d) a balloon
40. 40.⚖️ 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

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