Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
13 Cards in this Set
- Front
- Back
|
Rotation |
The spinning of earth on its axis |
|
|
How long does it take for the earth to rotate on its axis and how many degrees does it move per hour |
It takes 24 hours for one rotation and it moves 15 degrees per hour |
|
|
What are some apparent motions caused by rotations |
The Suns path (not real) Night and day (moon rise, moon set) Star trails |
|
|
Coriolis effect |
Causes the apparent curving of ocean currents |
|
|
Polaris |
Is the only star that does not appear to move because it's above earths axis of rotation |
|
|
Evidence that the earth really rotates |
Focault and pendulum |
|
|
Revolution |
The earths orbit around sun ( 365 1/4 days or 1 year) |
|
|
Revolution causes |
Seasons Changing constellations |
|
|
The earths orbit is in the shape of an |
Ellipse |
|
|
Eccentrics is between |
0 and 1 |
|
|
0 eccentricity means |
Perfect circle |
|
|
1 eccentricity means |
Flattened circle |
|
|
Formula for eccentricity |
Eccentricity = distance between foci/ length of the major axis |
