Explanation:
plate tectonics is where earths crust separates. into different plates there can be continental plated like continents and ocean plates
Here are some 5 facts I find interesting
-Some people use the term lithosphere to describe the geosphere. Depending on the definition of geosphere (which is debated by scientists), lithosphere can mean the same thing.
-The geosphere includes everything that looks like solid ground, including the ocean floors, sand in the deserts, rocks, mountains and every bit of land or formation on the continents.
-Aristotle, the Greek philosopher who lived from 384 - 322 BC, considered the geosphere to include the motion of earth, water, fire, and air
-There are eight major tectonic plates making up the earth's geosphere. They are constantly moving, but usually only a few centimeters each year,
-Scientific study related to the earth's geosphere can be broken down into specific disciplines including those covered in geology, geography, geochemistry, geomorphology, geophysics, glaciology, mineralogy, petrology, and volcanology.
Answer:
<u>Geocentric Model</u>: - this model is Earth Centered
-Retrograde motion is explained by epicycles
<u>Heliocentric Model</u>: - This model is Sun Centered
-Retrograde motion is explained by the orbital speeds of planets
<u>Both models</u>:- Epicycles and deferents help explain planetary motion
-Planets move in circular orbits and with uniform motion
-The brightness of a planet increases when the planet is closest to Earth
Explanation:
Retrograde motion is an apparent change in the movement of the planet through the sky. Ptolemy's model of the solar systems was geocentric, where the Sun, Moon, planets and start all orbit the Earth in perfectly circular orbits. However this perfectly circular orbits around the Earth did not explain the occasional retrograde motion of the planets. In the Copernicus' heliocentric model, retrograde motion of planets is naturally explained. The explanation for retrograde motion in a heliocentric model is that retrograde occurs roughly when a faster moving planet catches up to and passes a slower moving planet.
