Separating Mixtures Experiment Worksheet

Science experiments lesson 19: Separating mixtures: filter muddy water · Set 55 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a battery cell (d) muddy water
2. 2.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) salt from sea water (c) small stones from dal (d) mud from water
3. 3.⚖️ 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
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same muddy water (b) how clear the water is (c) the same funnel (d) the amount poured
5. 5.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) a mirror (c) a magnet (d) a battery cell
6. 6.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
7. 7.True or false: tea leaves from tea is done by sieving. (a) True (b) False
8. 8.🫗 Which of these is done by sieving? (a) sugar from sugar water (b) bran from wheat flour (c) small stones from dal (d) mud from water
9. 9.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
10. 10.⚖️ 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
11. 11.🫗 Which of these is done by sieving? (a) chaff from wheat grain (b) bad grains from rice (c) tea leaves from tea (d) gravel from fine sand
12. 12.True or false: tea leaves from tea is done by handpicking. (a) True (b) False
13. 13.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it sinks to the bottom (d) it floats on top
14. 14.🧺 Do we need a magnet for the muddy water filter? (a) needed (b) not needed
15. 15.True or false: cotton or cloth is not needed for the muddy water filter. (a) False (b) True
16. 16.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) both stay behind (c) leaves stay behind (d) tea stays behind
17. 17.True or false: sand and pebbles is needed for the muddy water filter. (a) False (b) True
18. 18.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: salt from sea water is done by handpicking. (a) True (b) False
20. 20.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
21. 21.🫗 Which of these is done by winnowing? (a) small stones from dal (b) gravel from fine sand (c) sugar from sugar water (d) husk from rice grain
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a clean glass (d) muddy water
23. 23.True or false: a battery cell is needed for the muddy water filter. (a) False (b) True
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) True (b) False
26. 26.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) yeast (d) sand and pebbles
27. 27.🧺 Do we need muddy water for the muddy water filter? (a) needed (b) not needed
28. 28.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
29. 29.🫗 How do we separate husk from rice grain? (a) evaporating (b) handpicking (c) winnowing (d) filtering
30. 30.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
31. 31.⚖️ 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 funnel (c) the filter material (d) the same muddy water
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the muddy water filter? (a) a balloon (b) sand and pebbles (c) cotton or cloth (d) muddy water
34. 34.🫗 How do we separate salt from sea water? (a) handpicking (b) sieving (c) evaporating (d) winnowing
35. 35.⚖️ 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
36. 36.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) a funnel (c) yeast (d) a balloon
37. 37.⚖️ 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
38. 38.⚖️ 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
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 funnel
40. 40.⚖️ 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) True (b) False

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