Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 893 · 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 hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a clean glass (c) yeast (d) a funnel
3. 3.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
4. 4.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) tea stays behind (d) leaves stay behind
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) a balloon
6. 6.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the filter adds soap (c) the water evaporates (d) the filter traps mud
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) True (b) False
8. 8.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the mud (c) nothing (d) the water
9. 9.🫗 Which of these is done by filtering? (a) tea leaves from tea (b) bran from wheat flour (c) gravel from fine sand (d) bad grains from rice
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) a funnel (d) cotton or cloth
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a mirror (c) a clean glass (d) a funnel
12. 12.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) a battery cell
13. 13.🛟 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
14. 14.🫗 How do we separate mud from water? (a) filtering (b) winnowing (c) evaporating (d) handpicking
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 change it (b) we measure it (c) we keep it the same
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a magnet (d) cotton or cloth
17. 17.⚖️ 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 keep it the same (c) we measure it
18. 18.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) the amount poured (d) how clear the water is
19. 19.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
20. 20.🫗 How do we separate bran from wheat flour? (a) filtering (b) evaporating (c) winnowing (d) sieving
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) a clean glass (d) a magnet
22. 22.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is the one thing we change. (a) True (b) False
24. 24.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) sieving (d) evaporating
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.True or false: salt from sea water is done by evaporating. (a) True (b) False
27. 27.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
28. 28.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
29. 29.⚖️ 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) True (b) False
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a mirror (c) cotton or cloth (d) sand and pebbles
31. 31.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
32. 32.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) muddy water (c) a clean glass (d) sand and pebbles
34. 34.⚖️ 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
35. 35.🫗 Which of these is done by evaporating? (a) mud from water (b) bad grains from rice (c) salt from sea water (d) gravel from fine sand
36. 36.🫗 Which of these is done by winnowing? (a) bran from wheat flour (b) husk from rice grain (c) tea leaves from tea (d) mud from water
37. 37.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
38. 38.🫗 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
39. 39.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) a clean glass (b) sand and pebbles (c) cotton or cloth (d) a magnet

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