A. Right off the bat because the main purpose is the keep a check on the weather, seeing if it's a storm developing or just to collect data and compare with past/ recent data.
During mantle convection, heat from the earth's core causes material in the mantle to expand and move upward. When it reaches the top, it cools,moves to the side, and sinks, making a circular pattern. This creates a continuous current of hot and cold material, leading to the movement of tectonic plates.
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.
Answer:
Factor that affect a country's deaths rate includes:
- Access to clean water
- Medical facilities
- Living standards of the people
Factor that could affect a country's birth rate include:
- Use of contraceptives methods
- Government Policies (The one child policy in China)
