Ocean 100 Sdsu Lab Practical Exam - Fall 2025 Questions And Answers.

What covers the seafloor? {Ans: silt, clay, gravel, and sand}How deep are the average oceans? {Ans: 3800km (12,500ft)}What are oceans average temperature? Why? {Ans: 4*C because the sun only reaches about 2% of the ocean}earths 4 spheres {Ans: hydrosphere, biosphere, atmosphere, and lithosphere}How does sediment move mostly? {Ans: rivers, wind, glaciers, and cliff erosion}how old is Earth? {Ans: 4.5 billion}