Is the ocean floor completely flat? No, of course it is not! List three physical features found on the ocean floor, and briefly describe what each looks like. First Feature: Second... Is the ocean floor completely flat? No, of course it is not! List three physical features found on the ocean floor, and briefly describe what each looks like. First Feature: Second Feature: Third Feature: What type of rock is the seafloor (oceanic crust) made of? What is the approximate age of the oldest oceanic crust? What is the approximate age of the youngest oceanic crust? Generally, where is the oldest oceanic crust found? Generally, where is the youngest oceanic crust found? Generally, where are the thickest layers of marine sediment found? Generally, where are the thinnest layers of marine sediment found?
Understand the Problem
The question requires information about the physical features of the ocean floor, the types of rocks that make up the oceanic crust, and the ages of various oceanic crust layers. Additionally, it inquires about the distribution of marine sediments in relation to their thickness across different areas of the ocean floor.
Answer
Ocean floor: ridges, plains, trenches. Crust: basalt, oldest ~200m years, youngest at ridges. Thickest sediment near continents, thinnest at ridges.
The ocean floor features include: 1) Mid-ocean ridges, which are underwater mountain ranges. 2) Abyssal plains, which are flat expanses of ocean floor. 3) Ocean trenches, which are very deep, narrow depressions. The oceanic crust is mainly basaltic. The oldest crust is about 200 million years old, while the youngest crust is near mid-ocean ridges. The thickest sediment layers are near continental margins, and the thinnest are near mid-ocean ridges.
Answer for screen readers
The ocean floor features include: 1) Mid-ocean ridges, which are underwater mountain ranges. 2) Abyssal plains, which are flat expanses of ocean floor. 3) Ocean trenches, which are very deep, narrow depressions. The oceanic crust is mainly basaltic. The oldest crust is about 200 million years old, while the youngest crust is near mid-ocean ridges. The thickest sediment layers are near continental margins, and the thinnest are near mid-ocean ridges.
More Information
Mid-ocean ridges are sites of seafloor spreading, abyssal plains cover significant ocean floor portions, and trenches are among the earth's deepest areas due to subduction zones.
Tips
Misidentifying features or locations can often happen, so consult maps and reliable sources.
Sources
- Ocean floor features - NOAA - noaa.gov
- Seafloor Features and Mapping the Seafloor | manoa.hawaii.edu - manoa.hawaii.edu
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