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There are two ways of describing this movement, both assuming that the North Pole is at the "top" of the Earth, which is how the world is normally shown. It can be said that the Earth turns from left to right, meaning that, if you look at the Earth so that you can see America, Africa and Europe, then the world rotates so that America (on the left) moves towards Europe and Africa (on the right). Alternatively, if you imagine yourself looking down on the Earth from above the North Pole, then the Earth will spin anti-clockwise, and it does this once a day. However there are two types of day - a solar day and a sidereal day. A solar day lasts 24 hours, and this is the time taken for a given point on the Earth to spin around so that it is once again facing the sun. Whilst the Earth is rotating, it is also moving along in its orbit around the sun. As it takes 365 days to compete its orbit, during which it goes through 360 degrees, it travels through an angle of just under 1 degree per day. The time taken for the earth to turn on its axis through 360 degrees is 23 hours, 56 minutes 4.1 seconds. This means that if you look at a particular point in space, e.g. at a star, then 23h 56m 4.1s that star will be in the same position in the sky. This is a sidereal day (from the word for "star") The Earth needs to then turn an extra degree to line up with the sun again, and the extra few minutes take us up to 24 hours. As the circumference of the Earth is 40,075.02 km (24,908.79 miles) around the equator, then any point on the equator is traveling at 1,674.36 km/hour, or 1,040.62 miles/hour!
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∙ 15y ago
Wiki User
∙ 15y agoIf you think about it the Sun rises in the east and sets in the west. It is not the Sun moving, but the Earth rotating that causes this apparent motion of the Sun. So the earth's rotation must be in the opposite direction to the Sun's motion - The Earth spins west to east or anticlockwise when viewed from the north pole.
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∙ 15y agoYou can calculate an average angular velocity in radians per second by dividing the angle traversed in one year; 2pi radians (360 degrees) by the number of seconds in a year; 365 days x 24 hr x 60 min x 60 sec = 31,536,000 seconds, to get Average angular velocity =(2 x 3.14)/(31536000) = 2 x 10^-7 rad/sec You can now calculate an average linear speed in meters per second by multiplying the angular velocity times the average radius of the orbit; 1.49 x 10^11 meters, to get; average linear velocity = (1.49 x 10^11) x (2 x10^-7) = 30,000 m/s
Wiki User
∙ 14y agoThe Equitorial Rotation Velocity of The Earth is 465.1 meters per second, or 1040 miles per hour.
This speed is based on the equator of The Earth, so the speed will decline depending on latitude.
Wiki User
∙ 12y agoThe rotation time for earth is one Earth Day, reconing according to standard (clock) time. Because of an interesting characteristic of a rotating body that is also revolving around a star, the absolute rotation of the earth (the exact time between transits of a distant star, or of the Vernal Equinox, for example) is a little short of the full 24 hours in a day of universal time.
The rotation time varies very slightly depending on your reference, but it is very close to 23 hours, 56 minutes and 4 seconds. See link for more details.
There are many implications of the Earth's rotation, for example: days and nights, timezones, different length of the daytime and nighttime during the year (it's because rotation, revolution and axial tilt of the Earth). You can observe Earth's rotation, solar time changing, seasonal Earth's time changing etc. on animated visualisation of the Earth's rotation (see: related links)
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∙ 14y agoEast, on a 5 degree tilt on it's axis
Answer:
The Earth's rotation is counterclockwise if you view it from space over the North pole, thus the sun seems move across the sky from the East to the West. As the sun is fixed, the Earth is rotating towards the East to give the apparent solar motion
Wiki User
∙ 14y agoPicture earth as a globe in front of you,N.pole at the top.S.pole at the bottom.Earth will be rotating left to right so that the eastern side of any land mass will be the first to see sunrise on that land mass
Wiki User
∙ 15y agoThe earth rotates counter clockwise when looking down on the North pole; everything proceeds to the east. In terms of vectors, this means the angular velocity vector for the earth points straight up along the earth's center axis, following the "right hand rule" where your fingers curl around in the direction of rotation and your thumb points in the vector's direction.
Wiki User
∙ 14y agoIt takes the Earth approximately 23 hours, 56 minutes and 4.09 seconds to make one complete revolution (360 degrees). This length of time is known as a sidereal day. The Earth rotates at a moderate angular velocity of 7.2921159 × 10-5 radians/second
Wiki User
∙ 13y agocircumference of the Earth at the equator = 25,000 miles
Time taken to make one complete rotation(around axis)= 24 hrs
25000/24 = over 1000 miles per hour on equators
At poles = About 1cm a day.
At your Place= Multiply by cosine of your latitude.
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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 is the Velocity of the earth as it revolve around the sun?
The earth revolves around the Sun at 17 miles a second or 67000 mph.
What is Earth's angular momentum when it is at perihelion in its orbit?
The point at which Earth is closest to the the Sun is called perihelion. Even though Earth is close to the Sun then, the Northern hemisphere experiences winter then. This is because the Northern Hemisphere is tilted away from the Sun at perihelion.
How does the sun stay in orbit around the sun?
The Sun's gravity keeps the Earth (and all the planets) in orbit around it. Yes, but obviously there's more to it or the planet would go into the Sun. It is the Earth's orbital velocity ( technically known as its tangential velocity) which, together with the force of gravity, keeps the Earth in orbit.
How much greater is the angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth?
Assuming a circular orbit for simplicity, the magnitude of the angular momentum is rmv - that is, the radius of the orbit times the mass times the velocity. I'll leave the details of the calculations to you; basically you have to look up:Earth's, or the Moon's, orbital radius (the distance from Sun to Earth vs. the distance from Earth to the Moon);The mass of the orbiting object;Its velocity in orbit.Then you must divide one by the other, since I assume it's the ratio you are interested in.
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 relation in astronomy between the Sun and Earth on July-4?
Aphelion. the Earth and Sun are furthest apart and the Earths angular velocity around the Sun is at its Tlowest (travelling slowly in its orbit).
What is the Velocity of the earth as it revolve around the sun?
The earth revolves around the Sun at 17 miles a second or 67000 mph.
The earth moves most rapidly in its orbit around?
First you may want to decide what you mean with "fast" - velocity in km/hour? Angular velocity?Both Jupiter and Saturn spin more than twice as fast as Earth (angular velocity). You may also want to check the rotation of Uranus and Neptune, they rotate faster than Earth, but not twice as fast.First you may want to decide what you mean with "fast" - velocity in km/hour? Angular velocity?Both Jupiter and Saturn spin more than twice as fast as Earth (angular velocity). You may also want to check the rotation of Uranus and Neptune, they rotate faster than Earth, but not twice as fast.First you may want to decide what you mean with "fast" - velocity in km/hour? Angular velocity?Both Jupiter and Saturn spin more than twice as fast as Earth (angular velocity). You may also want to check the rotation of Uranus and Neptune, they rotate faster than Earth, but not twice as fast.First you may want to decide what you mean with "fast" - velocity in km/hour? Angular velocity?Both Jupiter and Saturn spin more than twice as fast as Earth (angular velocity). You may also want to check the rotation of Uranus and Neptune, they rotate faster than Earth, but not twice as fast.
Why does the earth spin in space?
The Earth spins in space due to an action called angular momentum. The Sun is considered the fixed point of the Earth, which is why the Earth rotates around the Sun.
What is Earth's angular momentum when it is at perihelion in its orbit?
The point at which Earth is closest to the the Sun is called perihelion. Even though Earth is close to the Sun then, the Northern hemisphere experiences winter then. This is because the Northern Hemisphere is tilted away from the Sun at perihelion.
How does the sun stay in orbit around the sun?
The Sun's gravity keeps the Earth (and all the planets) in orbit around it. Yes, but obviously there's more to it or the planet would go into the Sun. It is the Earth's orbital velocity ( technically known as its tangential velocity) which, together with the force of gravity, keeps the Earth in orbit.
Can you consider earth as having a uniform velocity?
No. Earth's rotational velocity is slowing. Do you mean the velocity of Earth's revolution around the sun? The earth speeds up in its orbit until it reaches perihelion, and then slows until it reaches aphelion.
How fast does earth travel per hour?
When calculating the velocity of the earth there are three major vectors to calculate. First, the velocity of the earth as it orbits the sun. Second, the velocity as the solar system rotates around the galaxy. Third, the velocity that the Milky Way galaxy is moving through the universe. The Earth moves at 30 km/sec around the sun. The sun moves at 250 km/sec around the Milky Way and finally, the Milky Way is moving at about 300 km/second.
How does the earth remain in orbit around the the sun?
Earth remains in orbit around the Sun because the gravitational pull between the Earth and Sun is balanced by the centripetal reaction force, i.e. the angular acceleration, of the Earth's orbit.
How much greater is the angular momentum of the Earth orbiting about the sun than the moon orbiting about the Earth?
Assuming a circular orbit for simplicity, the magnitude of the angular momentum is rmv - that is, the radius of the orbit times the mass times the velocity. I'll leave the details of the calculations to you; basically you have to look up:Earth's, or the Moon's, orbital radius (the distance from Sun to Earth vs. the distance from Earth to the Moon);The mass of the orbiting object;Its velocity in orbit.Then you must divide one by the other, since I assume it's the ratio you are interested in.
Why earth is inertial frame of reference?
because it is non.accelerated as it as a uniform velocity of revlving around sun.
