Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 654 · 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.🛟 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
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a battery cell (b) cotton or cloth (c) muddy water (d) a clean glass
3. 3.True or false: gravel from fine sand is done by handpicking. (a) True (b) False
4. 4.⚖️ 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) how clear the water is (c) the same funnel (d) the filter material
5. 5.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a battery cell (c) a magnet (d) cotton or cloth
6. 6.⚖️ 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) True (b) False
7. 7.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
8. 8.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
9. 9.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a battery cell (d) a clean glass
11. 11.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) leaves pass through (c) tea stays behind (d) leaves stay behind
12. 12.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wash hands afterwards (d) wipe hands on face
13. 13.⚖️ 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 amount poured
14. 14.🫗 How do we separate bad grains from rice? (a) filtering (b) evaporating (c) sieving (d) handpicking
15. 15.True or false: small stones from dal is done by handpicking. (a) False (b) True
16. 16.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
17. 17.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
18. 18.🫗 Which of these is done by evaporating? (a) husk from rice grain (b) gravel from fine sand (c) bad grains from rice (d) salt from sea water
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a clean glass (d) turmeric powder
20. 20.True or false: gravel from fine sand is done by sieving. (a) False (b) True
21. 21.⚖️ 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
22. 22.🔍 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
23. 23.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the water evaporates (c) the mud dissolves (d) the filter traps mud
24. 24.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
25. 25.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same muddy water (c) how clear the water is (d) the amount poured
27. 27.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bad grains from rice (c) bran from wheat flour (d) salt from sea water
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ 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 change it (c) we measure it
30. 30.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
31. 31.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) muddy water (c) a mirror (d) sand and pebbles
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) cotton or cloth (d) a mirror
33. 33.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
34. 34.⚖️ 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 funnel (c) how clear the water is
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we change it (c) we measure it
36. 36.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) small stones from dal (c) mud from water (d) bran from wheat flour
37. 37.True or false: small stones from dal is done by sieving. (a) True (b) False
38. 38.True or false: a balloon is needed for the muddy water filter. (a) True (b) False
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
40. 40.True or false: tea leaves from tea is done by evaporating. (a) False (b) True

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