Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 296 · 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 poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) nothing (d) the water
2. 2.⚖️ 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) how clear the water is (c) the amount poured (d) the same funnel
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the same glass (c) the same muddy water (d) the amount poured
5. 5.⚖️ 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
6. 6.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False
7. 7.True or false: bad grains from rice is done by filtering. (a) False (b) True
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) True (b) False
9. 9.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a funnel (c) a clean glass (d) yeast
10. 10.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a mirror (c) cotton or cloth (d) a clean glass
11. 11.⚖️ 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
12. 12.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
13. 13.True or false: tea leaves from tea is done by winnowing. (a) True (b) False
14. 14.True or false: a magnet is needed for the muddy water filter. (a) True (b) False
15. 15.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
16. 16.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
17. 17.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
18. 18.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wipe hands on face (d) wash hands afterwards
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a battery cell
20. 20.🫗 How do we separate small stones from dal? (a) evaporating (b) winnowing (c) handpicking (d) filtering
21. 21.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the water evaporates (d) the mud dissolves
22. 22.True or false: bad grains from rice is done by evaporating. (a) False (b) True
23. 23.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) muddy water (c) sand and pebbles (d) yeast
25. 25.🫗 How do we separate husk from rice grain? (a) handpicking (b) filtering (c) evaporating (d) winnowing
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) muddy water (c) a balloon (d) a funnel
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
29. 29.🔮 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 sugar (d) it turns to sand
30. 30.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) sand and pebbles (d) a mirror
31. 31.🧺 Do we need muddy water for the muddy water filter? (a) not needed (b) needed
32. 32.🫗 Which of these is done by sieving? (a) bran from wheat flour (b) tea leaves from tea (c) salt from sea water (d) chaff from wheat grain
33. 33.⚖️ 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
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
36. 36.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
37. 37.🫗 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
38. 38.True or false: mud from water is done by filtering. (a) False (b) True
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it floats on top (c) it sinks to the bottom (d) it dissolves
40. 40.🫗 Which of these is done by handpicking? (a) salt from sea water (b) gravel from fine sand (c) small stones from dal (d) tea leaves from tea

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