Europe and North America are moving apart by about 5 m per...

Name: Problem 24, Chapter 8: Astronomy
Uploaded: 2020-10-27T14:08:43-08:00
Duration: 2 min 3 s
Channel: William Dunkerton
Description: Europe and North America are moving apart by about 5 m per century. As the continents separate, new ocean floor is created along the mid-Atlantic Rift. If the rift is 5000 km long, what is the total area of new ocean floor created in the Atlantic each century? (Remember that 1 km = 1000 m.)

Europe and North America are moving apart by about 5 m per century. As the continents separate, new ocean floor is created along the mid-Atlantic Rift. If the rift is 5000 km long, what is the total area of new ocean floor created in the Atlantic each century? (Remember that 1 km = 1000 m.)

Europe and North America are moving apart by about 5 m per century. As the continents separate, new
ocean floor is created along the mid-Atlantic Rift. If the rift is 5000 km long, what is the total area of new
ocean floor created in the Atlantic each century? (Remember that 1 km = 1000 m.)

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Key Concepts

Plate Tectonics

Plate tectonics is the scientific theory explaining the movement of Earth's lithospheric plates. In this context, the separation of continents at divergent boundaries, such as the mid-ocean ridge, results in the creation of new oceanic crust as magma rises to fill the gap.

Seafloor Spreading

Seafloor spreading is the process by which new oceanic crust is formed at mid-ocean ridges. As tectonic plates diverge, magma surfaces and cools to form new crust, expanding the ocean floor over time.

Units Conversion and Dimensional Analysis

Units conversion ensures that all measurements are in compatible units for calculation. For example, converting kilometers to meters allows for accurate computation of areas, while dimensional analysis helps verify that the resulting units correctly represent an area.

Area Calculation

Area calculation involves determining the extent of a two-dimensional surface by multiplying two perpendicular dimensions. In this context, finding the new ocean floor area requires multiplying the rift length by the lateral separation distance of the tectonic plates.

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