<span>The Crust - The crust is Earth's solid and rocky outer layer, including both the land surface and the ocean floor.</span>
To be an Archaeologist what you'll probably need is geography skills. YOU SHOULD BE CAPABLE ENOUGH TO read maps , study different rock types and vegetation,KNOW HOW to speak different languages.
THE WORLD IN SPACIAL TERMS
PHYSICAL SYSTEMS
HUMAN SYSTEMS
ENVIRONMENT AND STUDIES
PLACES AND REGIONS
From the 6 essantials elements of geography
WE should be using the first 5 because all of em are important for us to understand how humans developed at a certain climate, land etc.
Answer:
The most likely explanation is that the star is a member of an eclipsing binary star system.
Explanation:
An eclipsing binary star system takes place when two stars which are close to each other move in an orbit in which sometimes, one star can hide the light behind the other.
There are two types of eclipses depending on the orientation of the orbit and the size of the stars: the totals or the annular ones. It may also be the case that the eclipses are partial.
<em>Algol </em>is the best known eclipsing binary star, and the first of this kind to be discovered. Its interval between eclipses is 173 hours (2.9 days).
When this type of eclipses happens, the brightest star provides 92% of the light of the system, while the eclipsed only contributes less than 8%, and there is a third star, which is not eclipsed.
Therefore, if there is any star that has been bright most of the time, and during certain time intervals it becomes dimmer, that star is being overshadowed.
