Earth & Sun Relationship

Perihelion

Earth is closest to the sun (147 million km) on January 3rd

Aphelion

Earth is farthest from the sun (150 million km) on July 4th

Plane of the Ecliptic

plane of Earth’s orbit around the sun

Earth’s axis is tilted ___ degrees from the plane of the ecliptic

23.5

Analemma

sun’s position in the sky over a year from a fixed location and mean solar time on the earth

Temperature

measure of the average kinetic energy of the atoms or molecules in a substance, size does NOT matter

Heat

energy transferred into or out of an object because of temperature differences between that object and its surroundings, size matters

Heat Transfer Mechanisms

convection, conduction, radiation

Evaporation is a ___ process

cooling

Condensation is a ___ process

warming

Dew Point

temperature at which water vapor starts to condense out of the air, when air becomes completely saturated