Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 213 · 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? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
3. 3.True or false: a clean glass is not needed for the muddy water filter. (a) False (b) True
4. 4.🫗 Why does filtered muddy water look clearer? (a) the water evaporates (b) the mud dissolves (c) the filter traps mud (d) the filter adds soap
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) turmeric powder (d) muddy water
6. 6.⚖️ 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
7. 7.🫗 How do we separate salt from sea water? (a) evaporating (b) sieving (c) handpicking (d) winnowing
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a balloon (c) a magnet (d) a funnel
11. 11.⚖️ 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
12. 12.🫗 Which of these is done by filtering? (a) sugar from sugar water (b) gravel from fine sand (c) mud from water (d) husk from rice grain
13. 13.🛟 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
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a magnet (d) cotton or cloth
15. 15.⚖️ 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
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 funnel (b) the same muddy water (c) the filter material (d) the same glass
17. 17.🫗 Which of these is done by evaporating? (a) small stones from dal (b) bad grains from rice (c) salt from sea water (d) gravel from fine sand
18. 18.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) a clean glass
19. 19.⚖️ 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 change it (c) we keep it the same
20. 20.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) muddy water (d) sand and pebbles
21. 21.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) both stay behind (d) tea stays behind
22. 22.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) yeast (c) sand and pebbles (d) a clean glass
23. 23.🛟 What should you do after handling muddy water? (a) lick your fingers (b) nothing is needed (c) wipe hands on face (d) wash hands afterwards
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) muddy water (c) a funnel (d) cotton or cloth
25. 25.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
26. 26.⚖️ 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 muddy water (c) the same funnel (d) how clear the water is
27. 27.⚖️ 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) the same muddy water (c) how clear the water is
28. 28.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) yeast (d) a magnet
29. 29.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the water (d) the salt
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) True (b) False
31. 31.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
32. 32.True or false: cotton or cloth is not needed for the muddy water filter. (a) True (b) False
33. 33.True or false: turmeric powder is needed for the muddy water filter. (a) True (b) False
34. 34.True or false: bran from wheat flour is done by sieving. (a) True (b) False
35. 35.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
36. 36.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it sinks to the bottom (c) it floats on top (d) it turns to sand
37. 37.True or false: gravel from fine sand is done by sieving. (a) False (b) True
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
40. 40.True or false: cotton or cloth is needed for the muddy water filter. (a) True (b) False

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