Separating Mixtures Experiment Worksheet

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

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