Physical Geography Ch.1: Introduction to Earth

The angular inclination of the Earth´s axis with respect to a line perpendicular to the plane of the ecliptic.

23.5-degree

Calculate the solar altitude (SA=90-AD) on June 21, Near Northern California border. From the analemma we can see that on June 21, the declination of the Sun is 23.5 degrees North. The latitude Near the Northern California border is 42 degrees North.

71.5-degrees

Calculate the solar altitude (SA=90-AD) on June 21, Near Southern California border. From the analemma we can see that on June 21, the declination of the Sun is 23.5 degrees North. The latitude Near the Southern California border is 32.5 degrees North.

81.0-degrees

Using an analemma, one can readily calculate the:

Angle of the noon Sun for any date and any place.

Figure 2, letter A shows the Earth-Sun relation. What is the name of this month and name on this event?

December Solstice

During which event, will all latitudes receive 12 hours of day length?

Equinox

California Map Diagram. Latitude/Longitude Map. What is the name of the city at approximately 41 degrees N, 124 degrees W?

Eureka

Figure 2, letter B shows the Earth-Sun relation. What is the name of this month and name on this event?

June Solstice

Figure 1. California Map Diagram. Latitude/Longitude Map. What is the name of the city at approximately 34 degrees N, 118 degrees W?

Los Angeles

Figure 2, letter C shows, the date is March 20th, what is the name of this event?

March Equinox

Considering where California is on the globe, what bands of latitudes is most of California found in?

Mid-Latitudes

In your own words, explain what you have calculated above to a non-geography student or a client (explain what the answer tells us, in Southern California, not how it was calculated, be as specific as possible):

On June 21, at the latitude of 32.5-degree North, the noon-sun will be at 81.0-degrees, above Southern California.

California Map Diagram. Latitude/Longitude Map. What is the name of the city at approximately 38 degrees N, 122 degrees W?

Sacramento

California Map Diagram. Latitude/Longitude Map. What is the name of the city at approximately 33 degrees N, 117 degrees E?

San Diego

Looking at Figure 2, explain, in relation to the circle of illumination, why does the equator receive equal day and night irrespective of the any of the seasons?

This is because the circle of illumination splits the equator in half.