Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 46 · 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.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) muddier (d) clearer
2. 2.True or false: gravel from fine sand is done by sieving. (a) False (b) True
3. 3.🫗 Which of these is done by sieving? (a) tea leaves from tea (b) bran from wheat flour (c) small stones from dal (d) mud from water
4. 4.⚖️ 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 keep it the same (c) we measure it
5. 5.True or false: a balloon is needed for the muddy water filter. (a) False (b) True
6. 6.🫗 Which of these is done by sieving? (a) bad grains from rice (b) sugar from sugar water (c) gravel from fine sand (d) husk from rice grain
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is kept the same. (a) True (b) False
9. 9.⚖️ 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
10. 10.🧺 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 balloon (d) sand and pebbles
11. 11.🫗 How do we separate mud from water? (a) sieving (b) winnowing (c) filtering (d) handpicking
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) yes, all of it (c) it turns to sand (d) it turns to sugar
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.True or false: tea leaves from tea is done by filtering. (a) False (b) True
15. 15.🫗 How do we separate bad grains from rice? (a) sieving (b) handpicking (c) filtering (d) evaporating
16. 16.⚖️ 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
17. 17.True or false: a funnel is not needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: bran from wheat flour is done by sieving. (a) False (b) True
20. 20.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a funnel (c) a balloon (d) muddy water
23. 23.⚖️ 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
24. 24.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) muddy water (c) a magnet (d) yeast
25. 25.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
26. 26.🧺 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
27. 27.🫗 Which of these is done by filtering? (a) mud from water (b) sugar from sugar water (c) small stones from dal (d) husk from rice grain
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is the one thing we change. (a) True (b) False
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) sand and pebbles (c) cotton or cloth (d) a clean glass
30. 30.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) turmeric powder (c) a balloon (d) cotton or cloth
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
32. 32.🫗 How do we separate husk from rice grain? (a) winnowing (b) sieving (c) handpicking (d) filtering
33. 33.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is cold (d) yes, if it is clear
34. 34.🫗 Which of these is done by handpicking? (a) husk from rice grain (b) bad grains from rice (c) salt from sea water (d) gravel from fine sand
35. 35.⚖️ 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
36. 36.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it floats on top (b) it dissolves (c) it sinks to the bottom (d) it turns to sand
37. 37.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
38. 38.🛟 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
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) a clean glass (c) cotton or cloth (d) sand and pebbles
40. 40.⚖️ 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 same muddy water (d) the filter material

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