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.
Answer:
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Explanation:
Plate tectonics is a scientific theory describing the large-scale motion of the plates making up Earth's lithosphere since tectonic processes began on Earth between 3.3 and 3.5 billion years ago. The model builds on the concept of continental drift, an idea developed during the first decades of the 20th century
Answer:
The colour white is used to show barren land on topographical sheets.
Explanation:
Open scrub and seasonal streams are two features in the map that indicate the region has seasonal rainfall.
Rivers, steams and ponds/tanks are dry in nature.
Barren land shown in white colour also indicate tht the region has seasonal rainfall.
Answer:
But what impact is all of this social networking having on young minds?” Teens' developing brains are extremely vulnerable to so much time online, and because they often have difficulty self-regulating their screen time, risks increase which means they are more susceptible to peer pressure and cyberbullying.
Explanation:
