Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 554 · 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 floats on top (b) it turns to sand (c) it dissolves (d) it sinks to the bottom
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
3. 3.⚖️ 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 funnel (b) the same muddy water (c) how clear the water is (d) the filter material
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a clean glass (d) a mirror
5. 5.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) small stones from dal (c) chaff from wheat grain (d) sugar from sugar water
6. 6.🫗 Which of these is done by filtering? (a) salt from sea water (b) sugar from sugar water (c) tea leaves from tea (d) small stones from dal
7. 7.⚖️ 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
8. 8.⚖️ 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) False (b) True
9. 9.⚖️ 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 measure it (c) we keep it the same
10. 10.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is the one thing we change. (a) True (b) False
11. 11.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, if it is cold (c) yes, always (d) no, germs may stay
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) no, salt passes through (b) it turns to sand (c) it turns to sugar (d) yes, all of it
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) yeast (d) muddy water
14. 14.⚖️ 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
15. 15.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) muddier (b) hot (c) salty (d) clearer
16. 16.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
17. 17.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) muddy water (c) cotton or cloth (d) sand and pebbles
18. 18.True or false: muddy water is not needed for the muddy water filter. (a) False (b) True
19. 19.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
20. 20.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) muddy water (d) a mirror
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is sweet (c) clear water is salty (d) germs are invisible
22. 22.⚖️ 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) the filter material (c) the same muddy water (d) how clear the water is
23. 23.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) sand and pebbles (d) turmeric powder
24. 24.🫗 How do we separate husk from rice grain? (a) filtering (b) handpicking (c) winnowing (d) sieving
25. 25.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
26. 26.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) turmeric powder (c) cotton or cloth (d) yeast
29. 29.⚖️ 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 muddy water
30. 30.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a funnel (c) a balloon (d) a magnet
31. 31.⚖️ 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
32. 32.⚖️ 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
33. 33.True or false: mud from water is done by evaporating. (a) True (b) False
34. 34.🧺 Do we need a battery cell 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) a clean glass (c) a funnel (d) a mirror
36. 36.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
37. 37.⚖️ 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
38. 38.True or false: bad grains from rice is done by evaporating. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a funnel (d) a magnet

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