GEOG 2050 Lecture : Lecture 3
Document Summary
Satellite of the sun because it is locked in the suns gravitational pull make one rotation each year. Earth has a satellite too, we call it the moon. Average distance from the sun: 93 million miles. Farthest distance from the sun: 94. 5 million miles (july 4 ) (aphelion) Closest distance from the sun: 91. 5 million miles (jan 3) (perihelion) Our sun center of the solar system sunspots solar flares or prominences. The electromagnetic spectrum gamma, x ray, uv, visible, inferred, microwave, radio wave (order from shortest look in book about ecliptic, circle of illumination, subsoil point, and declination. It rotates about an axis 23 1/2 degrees look up in book: to longest wavelengths) The amount of insolation thats received outside the earths atmosphere on a surface normal to the incident radiation, and at the earths mea distance from the sun. Very small percentage (about 50 w/m^2 or less)
