Term
|
Definition
| Marked by the passage of the sun |
|
|
Term
|
Definition
| A complete rotation of the Earth with respect to the stars (23 hours, 56 minutes, and 4.099 seconds= 23.934 hours |
|
|
Term
|
Definition
| The apparent deflection of free-moving objects to the right in the Northern Hemisphere and to the left in the Southern Hemisphere, in response to the rotation of the Earth |
|
|
Term
|
Definition
| The amount of time it takes for the Earth to complete one revolution around the sun (365 days, 5 hours, 48 minutes, and 46 seconds (365.25). The tropical year is marked by the return of the seasons |
|
|
Term
|
Definition
| Closest position between the two bodies, 91.45 million miles, occurs on or about January 3. |
|
|
Term
|
Definition
| Furthest position between the two bodies, 94.56 million miles, occurs on or about July 4 |
|
|
Term
|
Definition
| An imaginary plane that passes through the sun and through the Earth at every point in its orbit around the sun. |
|
|
Term
|
Definition
| On this day (6/21-6/22 in Northern Hemisphere, 12/21/-12/22 in Southern Hemisphere), the noon rays from the sun are perpendicular at the latitude line lying 23.5 north of the equator (Parallel is known as the Tropic of Cancer) |
|
|
Term
|
Definition
| On this day (12/21-12/22 in Northern Hemisphere, 6/21-6/22 in Southern Hemisphere) the perpendicular rays of the sun, at noon, strike the parallel of 23.5 S, or the Tropic of Capricorn |
|
|
Term
|
Definition
| Time of the year when the perpendicular rays of the Sun, at noon, strike the equator. Vernal Equinox 3/21-22, Autumnal Equinox 9/21-22 |
|
|
Term
|
Definition
| Marked by the return of the new moon |
|
|
Term
|
Definition
| The line marking a time difference of an entire day from one side of the line to the other. Generally, this line falls on the 180t meridian except where it deviates to avoid separating an island group |
|
|
Term
|
Definition
| The study of the surface of the Earth, to include the atmospheric sciences, hydrology, physical oceanography, geology, geomorphology soil science and plant ecology and the processes that act on it |
|
|
Term
|
Definition
| The aggregate of social, physical, and cultural conditions that influence the life of an individual or a community, i.e., the surroundings. |
|
|
Term
|
Definition
| Consists of the entire "solid" portion of the Earth. It includes the crust and upper portion of the Mantle |
|
|
Term
|
Definition
| A then gaseous envelope that surrounds the Earth |
|
|
Term
|
Definition
| Zone of the Earth which contains the free water in either the solid, liquid or gaseous state. |
|
|
Term
|
Definition
| The entire realm where life (plant and animal) is found on the earth. |
|
|
Term
|
Definition
| A cloud of interstellar gas and dust about 1.0 light years wide |
|
|
Term
|
Definition
| Any plane that is passed through the center of a sphere bisects the sphere and creates a great circle where it intersects the surface of the sphere. |
|
|
Term
|
Definition
| The edge of the sunlight hemisphere that is a great circle separating the Earth into a light and dark half |
|
|
Term
|
Definition
| Imaginary plane that passes through the Earth halfway between the poles and perpendicular to the axis of rotation |
|
|
Term
|
Definition
| Plane passing through a sphere that does not pass through its center |
|
|
Term
|
Definition
| A line connecting all points of the same latitude |
|
|
Term
|
Definition
| An imaginary line of longitude extending from pole to pole, crossing all parallels at right angles, and being aligned in true north-south directions |
|
|
