The earth's orbit is in this shape A.)A circular path B.)An elongated oval path C.)A scaled oval path D.)Nearly a circular path
Answers
Answer:
Earth orbits the Sun at an average distance of 149.60 million km (92.96 million mi),[1] and one complete orbit takes 365.256 days (1 sidereal year), during which time Earth has traveled 940 million km (584 million mi).[2] Ignoring the influence of other solar system bodies, Earth's orbit is an ellipse with the Earth-Sun barycenter as one focus and a current eccentricity of 0.0167; since this value is close to zero, the center of the orbit is close, relative to the size of the orbit, to the center of the Sun.
As seen from Earth, the planet's orbital prograde motion makes the Sun appear to move with respect to other stars at a rate of about 1° eastward per solar day (or a Sun or Moon diameter every 12 hours).[nb 1] Earth's orbital speed averages 29.78 km/s (107,208 km/h; 66,616 mph), which is fast enough to cover the planet's diameter in 7 minutes and the distance to the Moon in 4 hours.[3]
From a vantage point above the north pole of either the Sun or Earth, Earth would appear to revolve in a counterclockwise direction around the Sun. From the same vantage point, both the Earth and the Sun would appear to rotate also in a counterclockwise direction about their respective axes.
Answer:
It is elliptical, or slightly oval-shaped. This means there is one point in the orbit where Earth is closest to the Sun, and another where Earth is farthest from the Sun.
Explanation:
Earth’s orbit is not a perfect circle. It is elliptical, or slightly oval-shaped. This means there is one point in the orbit where Earth is closest to the Sun, and another where Earth is farthest from the Sun.
it is a unit of astronomical distance which is equal to the distance light travels in one year.
A light-year is a measure of distance and not of time.
Light travels at a speed of 300,000 km/second.
Solar system
Solar system consists of eight planets.
Mercury, Venus, Earth, Mars, Jupiter, Uranus, Saturn and Neptune.
The inner planets are Mercury, Venus, Earth, and Mars.
After an asteroid belt comes the outer planets, Jupiter, Saturn, Uranus, and Neptune.
The Moon
The moon is the only natural satellite of the earth.
Evolution of the Earth
The age of Earth is approximately one-third of the age of the universe.
Earth formed around 4.54 billion years ago by accretion from the solar nebula.
Lithosphere, Atmosphere, and Hydrosphere of the Earth
Lithosphere: The firm outer part of the earth, comprising of the crust and upper mantle.
Atmosphere: A layer of gases encircling a planet that is seized in place by the gravity of that body.
Hydrosphere: It is the collective mass of water found on, under, and above the surface of the earth.
The first stage of the evolution of Lithosphere, Atmosphere, and Hydrosphere is marked by the loss of the primordial atmosphere.
In the second stage, the hot interior of the earth contributed to the evolution of the atmosphere.
Finally, the composition of the atmosphere was modified by the living world through the process of photosynthesis.
The present composition of the earth’s atmosphere is chiefly contributed by nitrogen and oxygen.
Geological Scale
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The Origin and the Evolution of the Earth (UPSC Notes):-
Frequently Asked Questions about Origin of the Earth
When was the Earth formed?
Earth, along with the other planets, is believed to have been born 4.5 billion years ago as a solidified cloud of dust and gases left over from the creation of the Sun. For perhaps 500 million years, the interior of Earth stayed solid and relatively cool, perhaps 2,000F.
What are the theories of the origin of the Earth?
The first and most widely accepted theory, core accretion, works well with the formation of the terrestrial planets like Earth but has problems with giant planets. The second, the disk instability method, may account for the creation of these giant planets.
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