How fast was the Pacific plate moving from 7.2 million years...

How fast was the Pacific plate moving from $7.2$ million years ago to $4.7$ million years ago between the formation of Kauai and Nihoa in $\mathrm{cm} /$ year? To calculate this divide the distance (in centimeters) between the two islands by the difference in their ages.

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Plate Tectonics

Plate tectonics is the study of the large-scale movement of Earth's lithospheric plates. This concept explains how the surface of the Earth is divided into plates that move relative to each other at varying speeds, leading to phenomena such as earthquakes, mountain building, and volcanic activity.

Rate Calculation

Rate calculation involves determining speed by dividing the distance traveled by the time taken. In geoscience, this method is used to estimate how fast a tectonic plate has moved over a given time period by comparing the positions of geological features formed at different times.

Unit Conversion

Unit conversion is the process of converting measurements from one system to another to ensure consistency in calculations. In this context, it includes converting distances into centimeters and time from millions of years to years, which is essential for accurately calculating the plate motion rate.

Geologic Time Scale

The geologic time scale is a system that relates geological events and the timing and relationships between events that have occurred over Earth's history. It helps in understanding the time intervals between significant geological processes, such as the formation of landforms, and is crucial when calculating rates of movement over millions of years.

Transcript

Please give Ace some feedback