Rotation of earth. What is the rotation of the Earth?


The rotation of the planet is that the movement that the earth makes when it rotates on its own axis, that is, on itself. This axis consists of an imaginary line that crosses the geographic poles, which inclines 24 ° concerning the Earth's orbit.

It takes 24 hours for the Earth's rotation movement to create the whole turn, at a speed of 1,700 kilometers per hour if measured at the equator. We don't feel the movement because it's applied constantly and since we move at the identical speed because the Earth. That is, we are a part of the identical earth movement system. If the speed of the movement weren't constant, we might feel it because of inertia.
Consequences of the rotational movement

Rotation of the planet
The constant rotational motion is to blame for flattening the Earth's axis.
The rotation of the planet generates consequences at a geographical, climatic, terrestrial, and physical level. the most ones are:

The succession of day and night. The Sun illuminates just one half the earth, which determines that it's the day, while the other side remains dark, generating night. because the planet rotates on its own axis, the dark face begins to receive light, and therefore the partner becomes dark.

Time differences. The zone system consists of a division of the day into hours for the whole planet, and its start line or point of reference is that the zero meridian or Greenwich meridian. that's why sunrise and sunset within the orient ahead of within the hemisphere.

The variation of temperature. The succession of day and night means, during the day, the illuminated face of the earth receives a greater amount of radiation. That energy accumulates and generates a rise in temperature. During the night, that face doesn't receive radiation, and also the temperature decreases.

The shape of the world. If the planet were still, you'll appreciate its sphere shape, that is, round. because the rotational movement is constant, a force is generated accountable for flattening the realm of ​​the poles or the Earth's axis and widening the realm of ​​the equator. due to the rotational motion, the world is formed like an ellipse or geoid.

The Cardinal points. because the planet rotates from west to east and also the Sun is at a set point, it may be seen from the world to look within the east at sunrise and set to the west at sunset. This information is helpful to locate the cardinal points if you are doing not have a compass.

The force field of the world. The rotational movement generates a field of force or energy that protects the planet from radiation through the atmosphere (a layer composed of gases and surrounds the Earth). Although the earth and living things need light and warmth from the Sun, a number of its rays are harmful. This flux causes a stream of particles within the atmosphere that blocks them and doesn't allow them to achieve the Earth's surface.

Earth's rotation speed
The speed of the Earth's rotation varies looking on the planet's area where it's calculated. From the equator, that is, the imaginary line that marks the Earth's maximum circumference, the route is 1,700 km per hour.

As you progress removed from the equator towards the poles, the speed is slower. as an example, at 45 ° north latitude, the rotation speed is 1,000 km per hour. Over the poles, where the imaginary axis passes, the speed is zero or 0 km per hour.

Translation of the planet
The translational movement occurs between two celestial bodies when the primary turn in its orbit round the second. within the case of the planet, it's to show round the sun. Our planet takes 12 months and 6 hours to finish this translation journey.

When the translational motion of the world interacts with the rotational motion, phenomena like the succession of the year's seasons and therefore the length of day and night occur.