| A | B |
|---|
| latitude | imaginary lines north to south on the globe...across |
| longitude | divides the east and west....down |
| parallel | another name for latitude lines |
| meridian | lines of longitude |
| rotation | spinning of earth on its axis....earth rotates every 24 hours |
| revolution | travel of a planet around the sun |
| period of rotation | time it takes a planet to make a complete turn around |
| period of revolution | time it takes the earth to go around the sun one time....365 days-1 year |
| axis | imaginary line n. pole to s. pole |
| inclination | angle of the tilt...earth inclination 23.5 |
| orbit | path a planet takes |
| aphelion | when earth is farther away from the sun |
| perihelion | when earth is closer to the sun |
| polaris | north star |
| solstice | longest and shortest days of the year |
| equinox | when day and night are equal |
| tropic of cancer | 23.5 north latitiude |
| tropic of capricorn | 23.5 south latitude |
| equator | cuts earth in half....line of latitude 0 |
| artic circle | 66.5 north latitude |
| antarctic circle | 66.5 south latitude |
| hemisphere | half earth |
| vernal equinox | when the suns rays hit the equator march 21, 22, 23 SPRING |
| autumnal equinox | when the suns rays hit the equator sept. 21,22,23 FALL |
| winter solstice | shortest day of the year...suns rays hit the tropic of cap. dec. 21,22,23 WINTER |
| summer solstice | longest day of the year..suns rays hit the tropic of cancer....june 21,22,23 SUMMER |
