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Understanding Water Systems: Grade 8 Review and Key Concepts

This review covers essential concepts related to water systems for Grade 8 students. It includes questions and answers about the Coriolis effect, the water cycle processes (evaporation, condensation, precipitation), and the differences in buoyancy between fresh and saltwater. Additionally, it discusses the effects of heat on water versus sand, the definition of potable water, sources of drinking water in Winnipeg, and the importance of ocean currents. It also explores Canadian drainage basins and the flow of rivers, emphasizing fundamental principles of hydrology.

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Understanding Water Systems: Grade 8 Review and Key Concepts

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  1. Grade 8 Review Water Systems

  2. Q 1: The rotation of the Earth affects winds and ocean currents. What is this effect called?

  3. A1: The Coriolis Effect

  4. Q 2: The water cycle involves runoff, evaporation, condensation, absorption, precipitation and transpiration. What are the 3 main processes?

  5. A2: evaporation, condensation, precipitation

  6. Q 3: A ship travels from fresh water to sea water? Will the ship float higher or lower in the water?

  7. A3: higher

  8. Q 4: A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is the independent variable?

  9. A4: The substance (i.e. water or sand).

  10. Q 5: A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is the dependent variable?

  11. A5: The temperature of the material.

  12. Q 6: A student heats equal amounts of sand and water in identical beakers on a hot plate set at 250oC? He measures the temperature of both substances every minute for 45 minutes.What is a possible hypothesis?

  13. A6: I believe that the water will heat up more slowly.

  14. Q 7: I believe that the water will heat up more slowly.Why is this?

  15. A7: Water has a HIGH HEAT CAPACITY!

  16. Q 8: Not all fresh water sources are safe. What term is used to describe drinkable water ?

  17. A8: Potable

  18. Q 9: Where does Winnipeg get its drinking water?

  19. A9: Shoal Lake, ON

  20. Q 10: Why are ocean currents important?

  21. A10: They distribute heat around the globe; they affect climate; they create upwellings which stir nutrients off the ocean floor.

  22. Q 11: To which Canadian drainage basin does Winnipeg belong?

  23. A11: Hudson Bay

  24. Q 12: To which Canadian drainage basin does Toronto belong?

  25. A12: Atlantic

  26. Q 13: To which Canadian drainage basin does Vancouver belong?

  27. A13: Pacific

  28. Q 14: To which Canadian drainage basin does Calgary belong?

  29. Q 14: Hudson Bay

  30. Q 15: Water flowing down the Assiniboine River flows east towards the Forks. Why?

  31. A15: Water flows downhillGravity!

  32. Q 16: What is the other major river that flows through Winnipeg?

  33. A 16: The Red River

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