What areas do the data cover?

Earthquakes are one of the biggest natural disaster risks in some parts of the world. In this exercise you will add the USA Earthquake Risk layer to your map and assess the earthquake risk in several areas.
Find the USA Earthquake Risk layer by selecting “Add” then “Browse Living Atlas Layers.” Next select “Landscape” then “Ecology” and “USA Earthquake Risk.”
Add the layer to your map by clicking “Add layer to map (as layer).”
In the Content window on the left side of the screen, click on the ellipses below the layer name and then select “Show item details.” A new screen should appear in your web browser that describes the dataset in the Description and Dataset Summary sections. If more information about the dataset is desired, users can click on “Link to source metadata” toward the bottom of the page. Answer the question about the dataset.


Continental U.S., Alaska, Hawaii, and Puerto Rico

Environmental & Atmospheric Sciences

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Environmental & Atmospheric Sciences

Use the analemma to find:

a) The subsolar point on November 10 (marked) b) The subsolar point on May 11 c) The subsolar point today d) The date(s) when the declination is 9°S e) The date(s) when the declination is 21°N

Environmental & Atmospheric Sciences

In the Public Land Survey System (PLSS), beginning at the Principal Meridian, the land is subdivided into six-mile-wide, north-south strips of land called ________; beginning at the Base Line, the land is subdivided into six-mile-wide, east-west strips of land called ________.

A) northings; eastings B) eastings; northings C) townships; ranges D) ranges; townships

Environmental & Atmospheric Sciences

The primary factor that determines whether water moves by turbulent or laminar flow is ____

A)discharge B)gradient C)velocity D)area E)infiltration capacity

Environmental & Atmospheric Sciences