Answer:
Defined as below
Explanation:
Plate tectonics are defined as the pieces of Earth's crust floating over the liquid asthenosphere or the movements of sheets/plates of hard rock over the rigid mantle. Varying in thickness moving in the directions to there orientation. They are either oceanic or continental plates
Rift valleys are generally linear or are highlands that separated by actions of geologic agents. It may be formed by a divergent or a convergent plate movement. 0n earth can occur on all height above mean sea levels. Extraterrestrial Rift valleys have also been found on planets in the solar system. Example is Eastern valley of africa.
Earthquake is a shaking of the earth from the interior due to the vibrations and waves produced due to the movement of geo-material beneath the earth's crust. These waves are measured on a Richter scale and range from 1 to 12 caused by sliding of the earth plates from the convergent, divergent and transform boundaries. Like the ring of fire an earthquake prone region.
Middle America refers to the states to the south of the US and specifically Mexico, the states of Central America and Islands near Central America. Venezuela does not belong to those states; It is part of South America and it is quite far from the other areas, relative to the distance between them.
Explanation:
at the dedication of the Gettysburg Civil War Cemetery on November 19, 1863
-- Earth is one planet is a "Solar System", that consists of everything
that's gravitationally hooked to the Sun ... one star. This system contains
7 other other significant planets, more than 100 of their moons, and huge
numbers of comets, asteroids, dwarf planets, and countless bodies in a
giant shell that are so small and so far away that we can only see a few
of them so far. Every one of these items orbits the sun. The ones that
are farthest out may take thousands of years to complete one orbit.
That's the 'kingdom' of ONE star ... the sun.
-- It's very likely that there are similar gatherings of different-size objects
around MOST stars ... maybe ALL stars. Those objects are tremendously
difficult for us to see. We're just beginning to be able to see the most massive
planets that go with other stars, and already, something like a thousand of them
have been discovered. We know that they're there, but we can't see things like
their actual size or surface markings yet.
-- Stars are clumped in gatherings of several billion, called 'galaxies'.
Our sun is one of an estimated 300 to 400 billion stars in one galaxy,
which we call the "Milky Way Galaxy".
-- Astronomers estimate that there are billions of other galaxies.
So there are billions of billions of other stars, and most of them may
have several planets.
That's an awful lot of OTHER physical systems out there, that contain
other planets and moons.
Having trouble wrapping your mind around all of that ? Don't worry,
you're not the only one. It's easy for us to talk about it, but impossible
for our minds to actually understand it. It's just too big.
