Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 272 · 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: the same funnel is the one thing we change. (a) True (b) False
2. 2.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
3. 3.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
4. 4.🧺 Do we need sand and pebbles for the muddy water filter? (a) not needed (b) needed
5. 5.⚖️ 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 keep it the same (c) we change it
6. 6.⚖️ 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
7. 7.True or false: chaff from wheat grain is done by winnowing. (a) True (b) False
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) a funnel
9. 9.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
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.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) True (b) False
12. 12.🧺 Which of these is needed for the muddy water filter? (a) sand and pebbles (b) yeast (c) a battery cell (d) a balloon
13. 13.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
14. 14.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
15. 15.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sand (c) no, salt passes through (d) it turns to sugar
16. 16.🫗 How do we separate bran from wheat flour? (a) winnowing (b) evaporating (c) filtering (d) sieving
17. 17.True or false: bran from wheat flour is done by winnowing. (a) False (b) True
18. 18.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) the mud (c) the salt (d) nothing
19. 19.🔍 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
20. 20.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
21. 21.True or false: bad grains from rice is done by evaporating. (a) False (b) True
22. 22.⚖️ 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) how clear the water is (c) the same glass (d) the same funnel
23. 23.🧺 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 magnet
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a battery cell (b) a clean glass (c) muddy water (d) a funnel
25. 25.🫗 How do we separate bad grains from rice? (a) handpicking (b) sieving (c) winnowing (d) evaporating
26. 26.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
27. 27.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) yes, always (c) no, germs may stay (d) yes, if it is clear
28. 28.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves stay behind (b) leaves pass through (c) tea stays behind (d) both stay behind
29. 29.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
30. 30.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
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) False (b) True
32. 32.⚖️ 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 glass (b) the same muddy water (c) the amount poured (d) the filter material
33. 33.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) sand and pebbles (c) a mirror (d) cotton or cloth
35. 35.🫗 How do we separate mud from water? (a) evaporating (b) winnowing (c) sieving (d) filtering
36. 36.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is what we measure. (a) False (b) True
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is what we measure. (a) False (b) True
39. 39.⚖️ 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
40. 40.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) sand and pebbles (d) a battery cell

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