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The season depends on which hemisphere you are in.
The earth's orbit around the sun is not a circle. The earth's orbit around the sun is slightly elliptical. Therefore, the distance between the earth and the sun varies throughout the year.
At its nearest point on the ellipse that is the earth's orbit around the sun, the earth is 91,445,000 miles (147,166,462 km) from the sun. This point in the earth's orbit is known as perihelion and it occurs on January 3. During our closest approach is when our orbital velocity is the greatest.
The earth is farthest away from the sun on July 4 when it is 94,555,000 miles (152,171,522 km) from the sun. This point in the earth's orbit is called aphelion.
The slight ellipse in the earth's orbit does have a slight impact on the amount of solar energy being received by the earth. This 3.3% difference in distance does not impact the earth as much as the seasonal variations, however.
From: http://geography.about.com/od/physicalgeography/a/orbitsun.htm
What else can I help you with?
What is the name for a planet's speed in its orbit?
It is the orbital velocity (speed and direction) or orbital speed (rate of motion). It is usually stated as "average orbital speed" but is actually "mean orbital speed."
The velocity a rocket must reach to establish an orbit around earth is called?
The velocity a rocket must reach to establish an orbit around the Earth is called orbital velocity. It is the speed required for an object to overcome gravitational pull and maintain a stable orbit around the planet. The orbital velocity depends on the altitude of the orbit and follows Kepler's laws of planetary motion.
What speed does a rocket have to reach to get into space?
(Escape velocity) at least 7 miles ber second. Close-Orbital velocity is about 5 miles per second.
What is Orbital Speed?
Orbital speed is the velocity required for an object to stay in a stable orbit around another body, like a planet or a star. It is determined by balancing the gravitational force pulling the object towards the center with the object's inertia carrying it forward. The speed needed for orbit depends on the mass of the central body and the object's distance from it.
What planet has the fastest orbital velocity?
Mercury
Which term refers to the speed at which a planet travel in its orbit?
Orbital velocity refers to the speed at which a planet travels in its orbit.
What does the words orbital speed mean?
Orbital speed is the velocity (speed) of an object as it travels an orbital path around a reference point.
What is the name for a planet's speed in its orbit?
It is the orbital velocity (speed and direction) or orbital speed (rate of motion). It is usually stated as "average orbital speed" but is actually "mean orbital speed."
Is escape velocity bigger than orbital velocity?
Yes, escape velocity is greater than orbital velocity. Escape velocity is the minimum speed required for an object to break free from the gravitational pull of a celestial body and move into space. Orbital velocity is the speed required for an object to maintain a stable orbit around a celestial body.
Do mercury and earth travel at the same speed?
Nope. Mercury has an orbital velocity of 47.9km/s, whereas Earth has an orbital velocity of 29.8km/s.
What is the speed of Jupiter planet?
Jupiter has an orbital velocity of 13.1km/s.
The velocity a rocket must reach to establish an orbit around earth is called?
The velocity a rocket must reach to establish an orbit around the Earth is called orbital velocity. It is the speed required for an object to overcome gravitational pull and maintain a stable orbit around the planet. The orbital velocity depends on the altitude of the orbit and follows Kepler's laws of planetary motion.
What Mach rate when accelerating to orbital velocity?
Mach rate is typically not used to measure speed during the acceleration to orbital velocity. Instead, orbital velocity is usually measured in meters per second or kilometers per hour. The Mach number is more commonly used to represent the speed of an object relative to the speed of sound in a particular medium.
What is the difference between orbital velocity and angular velocity?
Orbital Velocity is calculated in m/s where as angular velocity is calculated in rad/s.. Answer is very clear.. angular velocity is calculated when body is rotating around a axis and a reference point is needed to calculate it.. where as orbital velocity is calculated when body is moving around a bado in circular path, nt around itself... e.g. Earth rotates around so it have angular velocity .. it also rotates around sun in orbit so it has Orbital velocity also :)
What does it mean orbital speed?
The velocity a planet travels in it's circle around the Sun
What is the orbital speed on Makemake?
The orbital speed of Makemake, a dwarf planet in our solar system, is approximately (4.419 , \text{km/s}). This speed represents the velocity at which Makemake orbits the Sun in its elliptical path.
The orbital speed of Venus' and Neptune?
According to http://solarsystem.nasa.gov/planets/, Venus has an orbital velocity of 78,341 mph, and Neptune's is 12,253 mph...
