Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 424 · 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.⚖️ 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
2. 2.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) nothing is needed (d) wipe hands on face
3. 3.🧺 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) a clean glass
4. 4.⚖️ 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
5. 5.🫗 How do we separate small stones from dal? (a) evaporating (b) filtering (c) handpicking (d) sieving
6. 6.True or false: muddy water is needed for the muddy water filter. (a) True (b) False
7. 7.True or false: gravel from fine sand is done by sieving. (a) False (b) True
8. 8.⚖️ 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
9. 9.🫗 Which of these is done by filtering? (a) husk from rice grain (b) chaff from wheat grain (c) gravel from fine sand (d) tea leaves from tea
10. 10.🛟 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
11. 11.⚖️ 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) False (b) True
12. 12.True or false: yeast is not needed for the muddy water filter. (a) True (b) False
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) a mirror (d) muddy water
14. 14.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is what we measure. (a) True (b) False
15. 15.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) turmeric powder (c) a funnel (d) muddy water
16. 16.⚖️ 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 muddy water (b) the same funnel (c) the amount poured (d) the filter material
17. 17.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
18. 18.True or false: bran from wheat flour is done by sieving. (a) False (b) True
19. 19.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a mirror (c) turmeric powder (d) muddy water
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
21. 21.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) muddier (d) clearer
23. 23.🫗 Which of these is done by handpicking? (a) bad grains from rice (b) gravel from fine sand (c) sugar from sugar water (d) husk from rice grain
24. 24.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
25. 25.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the amount poured (b) the same glass (c) how clear the water is (d) the same muddy water
29. 29.🫗 Which of these is done by winnowing? (a) gravel from fine sand (b) chaff from wheat grain (c) tea leaves from tea (d) small stones from dal
30. 30.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) the filter material (c) how clear the water is
32. 32.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, always (c) yes, if it is clear (d) yes, if it is cold
33. 33.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
34. 34.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
35. 35.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a balloon (c) a battery cell (d) cotton or cloth
36. 36.True or false: sugar from sugar water is done by handpicking. (a) False (b) True
37. 37.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) sand and pebbles (c) a balloon (d) a clean glass
38. 38.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) a magnet (d) cotton or cloth
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
40. 40.True or false: small stones from dal is done by handpicking. (a) True (b) False

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