Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 169 · 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.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
2. 2.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
3. 3.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
4. 4.True or false: salt from sea water is done by evaporating. (a) False (b) True
5. 5.🫗 How do we separate chaff from wheat grain? (a) handpicking (b) filtering (c) winnowing (d) sieving
6. 6.⚖️ 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
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) cotton or cloth (c) turmeric powder (d) a magnet
9. 9.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
10. 10.⚖️ 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 measure it (c) we change it
11. 11.True or false: small stones from dal is done by handpicking. (a) True (b) False
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same funnel (b) the filter material (c) how clear the water is
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) germs are invisible (c) clear water is salty (d) clear water is hot
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) cotton or cloth (d) a mirror
15. 15.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
16. 16.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
17. 17.🫗 Which of these is done by winnowing? (a) small stones from dal (b) bad grains from rice (c) mud from water (d) husk from rice grain
18. 18.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
19. 19.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
20. 20.⚖️ 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) True (b) False
21. 21.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
22. 22.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
23. 23.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a magnet (c) a clean glass (d) sand and pebbles
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a battery cell (c) a clean glass (d) a balloon
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) sand and pebbles (d) a magnet
26. 26.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wash hands afterwards (c) wipe hands on face (d) lick your fingers
27. 27.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) gravel from fine sand (c) bad grains from rice (d) mud from water
28. 28.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
29. 29.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
31. 31.True or false: tea leaves from tea is done by filtering. (a) False (b) True
32. 32.⚖️ 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
33. 33.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) clearer (c) salty (d) muddier
34. 34.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) turmeric powder (c) a clean glass (d) sand and pebbles
36. 36.🫗 Which of these is done by winnowing? (a) salt from sea water (b) bad grains from rice (c) chaff from wheat grain (d) mud from water
37. 37.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) filtering (d) winnowing
38. 38.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a battery cell (d) muddy water
39. 39.🫗 How do we separate gravel from fine sand? (a) handpicking (b) filtering (c) winnowing (d) sieving
40. 40.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) a magnet (d) a mirror

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