Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 14 · 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: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) both stay behind (d) tea stays behind
2. 2.🫗 How do we separate bad grains from rice? (a) filtering (b) sieving (c) handpicking (d) winnowing
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.⚖️ 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) False (b) True
5. 5.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) chaff from wheat grain (c) husk from rice grain (d) tea leaves from tea
6. 6.⚖️ 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 keep it the same (b) we change it (c) we measure it
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? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the same muddy water (d) the filter material
9. 9.True or false: salt from sea water is done by evaporating. (a) True (b) False
10. 10.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the filter traps mud (c) the water evaporates (d) the mud dissolves
11. 11.True or false: bad grains from rice is done by handpicking. (a) False (b) True
12. 12.⚖️ 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
13. 13.🫗 How do we separate husk from rice grain? (a) sieving (b) filtering (c) handpicking (d) winnowing
14. 14.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
15. 15.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it sinks to the bottom (c) it floats on top (d) it dissolves
16. 16.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) a battery cell (d) sand and pebbles
17. 17.⚖️ 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
18. 18.True or false: bran from wheat flour is done by sieving. (a) True (b) False
19. 19.🫗 Which of these is done by winnowing? (a) sugar from sugar water (b) gravel from fine sand (c) bran from wheat flour (d) husk from rice grain
20. 20.🫗 How do we separate small stones from dal? (a) sieving (b) handpicking (c) evaporating (d) filtering
21. 21.🫗 Which of these is done by handpicking? (a) sugar from sugar water (b) bran from wheat flour (c) small stones from dal (d) chaff from wheat grain
22. 22.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a balloon (c) a magnet (d) muddy water
23. 23.⚖️ 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) how clear the water is (c) the filter material (d) the same glass
24. 24.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a mirror (b) sand and pebbles (c) muddy water (d) cotton or cloth
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) a funnel (c) muddy water (d) sand and pebbles
27. 27.⚖️ 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) False (b) True
28. 28.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
29. 29.🛟 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
30. 30.True or false: bad grains from rice is done by evaporating. (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) how clear the water is (b) the same muddy water (c) the filter material
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a balloon (b) muddy water (c) sand and pebbles (d) a clean glass
33. 33.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) handpicking (c) sieving (d) filtering
34. 34.True or false: a funnel is needed for the muddy water filter. (a) True (b) False
35. 35.⚖️ 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 change it (c) we measure it
36. 36.True or false: gravel from fine sand is done by filtering. (a) False (b) True
37. 37.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
38. 38.🫗 Is filtered pond water safe to drink? (a) yes, always (b) yes, if it is clear (c) yes, if it is cold (d) no, germs may stay
39. 39.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
40. 40.🫗 Which of these is done by winnowing? (a) bad grains from rice (b) mud from water (c) gravel from fine sand (d) chaff from wheat grain

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