Answer: two solar eclipses separated by one Saros cycle will have the same geometric characteristics (they will both be total, or partial or annular).
A Saros is a period of time of about 18 years 11 days and 8 hours and represents the time needed for the system composed by Moon, Earth, and Sun to return to its initial position.
Indeed, this is due to a natural harmony of the Moon’s motion: it takes 29.53 days to complete one orbit around Earth (Synodic Month), it takes 27.21 days to pass from the same node of its orbit (Draconic Month) and it takes 27.55 days to go from perigee to perigee (Anomalistic Month); the composition of these three motions gives one Saros of around 6585.3 days, composed by 223 Synodic Months, 239 Anomalistic Months and 242 Draconic Months (with a precision of few hours).
It has been observed that after one Saros cycle Moon, Earth and Sun are in the same initial position, therefore an eclipse occurring on day 1 of two consecutive Soros cycles would have the same geometric characteristics, which means that one Saros can be considered the periodicity of solar and lunar eclipses.
Due to the fact that a Saros is not composed by a whole number of days (we have a remainder of 8 hours), the two eclipses won’t be visible from the same location on Earth due to the rotation around its axis. It takes about 3 Soros for this to happen.
Answer:
there is approximately 200 lakes
The correct answer for the question that is being presented above is this one: "layers of metamorphic rock that eroded and extruded from deep in the earth's crust. <span>The Columbia Plateau is a geologic and geographic region that lies across parts of the U.S. states of Washington, Oregon, and Idaho. </span>
Let's look at all the options:
The assassination of Archduke Franz Ferdinand angered Austria.
-this is correct! This assassination happened in Sarajevo.
<em>Serbia declared war on Austria,which caused Austria’s allies to go to war</em>
This is false: the opposite is true; Austria declared war on Serbia, and then Serbia's Ally, Russia joined the war
<em>Nationalism increased
tensions in the Balkan peninsula</em>.
This is true. Because of this a conflict could be foreseen.
<em>Russia's mobilization plan called for
an invasion of France through Belgium. </em>
This is false- not Russia, but Germany had such a plan.
<em>Alliances caused a chain of
events that pulled each country into war.</em>
Very true!
The two alliences were Austria-Germany-Italy and Russia-France-UK
In chemistry and physics, the atomic theory explains how our understanding of the atom has changed over time. Atoms were once thought to be the smallest pieces of matter. However, it is now known that atoms are made up of protons, neutrons, and electrons. These subatomic particles are made up of quarks. The first idea of the atom came from the Greek philosopher Democritus. A lot of the ideas in the modern theory came from John Dalton, a British chemist and physicist.
The theory applies to solids, liquids and gases, but it does not apply in quite the same way to plasmas or neutron stars.
