| A | B |
|---|
| celestial sphere | imaginary dome of the sky onto which all celestial objects are plotted |
| celestial spheres plot: | stars, constellations, planets, and moons |
| zenith | the highest point (altitude) of the sphere. directly above the observer (90 degrees) |
| horizon | the line where the sky meets the earth. its the edge of the sphere (0 degrees) |
| arc path | the apparent path the sun moves along with a celestial spehere. |
| real motion | the actual motion of a celestial object |
| apparent motion | how a celestial object seems to move |
| starts appear to move across the sky ____ to ____. | east to west |
| how many degrees per hour do stars move | 15 |
| stars appear to make ____ degree trip around the _____ in ____ hours. | 360, earth, 24 |
| stars that make a ___ degree trip around polaris are _____ stars | 360, circumpolar |
| constellation | grouping of two or more stars. |
| what are examples of constellations | big dipper, orion, and zodiac |
| what is evidence of the earth revolving around the sun | you can see diff constellations at diff times of year. |
| what does planet mean | wanderer |
| we are spinning ___ to ____ | west to east |
| retrograde motion | outer planets appear to move backward compared to earth |
| altitude | height of an object above the horizon |
| azimuth | specific direction you look to see and object (north, west, east, southeast etc.) |
| earth rotates west to east on tilted axis of ____ degrees | 23.5 |
| lower latitude, ____ rotation speed. | faster |
| earth rotates ___degrees per hour | 15 |
| coriolis efefct | bc the earth rotates, winds and moving water are curved. |
| northern hemisphere curved ____. southern curved ____ | right, left. |
| foucault pendulum | a freely swinging pendulum will appear to change direction |
| earth orbits sun ___ degree per day | 1 |
| full revolution at rate of _____ mph | 67,000 |
| earths orbit is silghtly _____ | elliptical |
| the earth has ____ days | 365.26 |
