Q:

What is the difference between Earth's rotation and its revolution?

A:

Quick Answer

Rotation refers to the Earth’s spin around its internal axis, while revolution refers to the Earth’s orbital motion around the sun. The Earth rotates on its axis once every 24 hours and revolves around the sun once every 365.25 days.

Know More

Full Answer

The Earth always changes its position every day, and it moves closer to or further away from the sun. Its rotation axis is an imaginary line that passes from the North Pole to the South Pole. Compared to a revolution which takes a year, a rotation is short and occurs once a day. The sun appears to rise in the morning and set at night because of the Earth’s rotation. There are also differences in time across nations due to rotation. Countries on the side of the globe that face the sun experience daytime, while other parts of the world that are away from the sun experience night. Furthermore, the speed of rotation has significant effects on the Earth’s shape, climate, tectonic forces and ocean depth. The Earth’s revolution has impact on seasons. The different seasons are a result of the planet’s revolution around the sun. Depending on which hemisphere is closer to the sun, continents have summer and winter during the Earth’s course of revolution. Spring or autumn arrives when both hemispheres are equidistant from the sun.

Learn more about Earth Science

Related Questions

  • Q:

    When will life on Earth end?

    A:

    According to astrobiologist Jack O'Malley-James of the University of St. Andrews in Scotland, the sun will grow large enough to extinguish all life on Earth in roughly 2.8 billion years. The planet's non-microbial life will become extinct in 800 million to 1.3 billion years.

    Full Answer >
    Filed Under:
  • Q:

    Why is the sun so important to life on Earth?

    A:

    The sun is important to Earth because it helps regulate the climate, is the main source of energy for producers in the ecosystems and it keeps the oceans from freezing, along with providing light. If just one of these factors changed dramatically, it would impact all life on Earth. Without the sun, the planet's oceans would freeze, temperatures would drop and all life would die off without light or food.

    Full Answer >
    Filed Under:
  • Q:

    Where is silicon found?

    A:

    Silicon can be found in the sun and stars and is the main part of meteorites. Silicon makes up 25.7 percent of the Earth's crust, but it is not found free in nature.

    Full Answer >
    Filed Under:
  • Q:

    When was the Earth discovered and by whom?

    A:

    In the year 1515, Nicolaus Copernicus theorized that the Earth was a planet and discovered the idea of a heliocentric solar system, a system in which all planets revolved around the sun. He built his own observatory in 1513 to help him watch the actions of planets.

    Full Answer >
    Filed Under:

Explore