Our Sun - Sun For Kids - Facts About The Sun
Earth is the third planet from the Sun and largest of the terrestrial planets. of the apparent movement on the Sun and planets in relation to their viewpoint. Read about the history and future of Earth's sun as well as fun facts about the sun's age, size, temperature, and phenomena like solar flares. The relationship between Sun and Earth has gone back for In fact, there's enough energy coming from the Sun to deposit Watts of.
Earth's Sun: Facts About the Sun's Age, Size and History
For places in the northern hemisphere, the shortest solar day occurs around December 21 winter solstice and the longest solar day occurs around June 21 summer solstice. In theory, during the time of the equinox, the length of the day should be equal to the length of the night.
The average time the earth takes to move around the sun in approximately days. This path that the earth takes to revolve around the sun is called the elliptical path. When the sun is moving down from above the celestial equator, crosses it, then moves below it, that point of intersection between the two planes is when the Autumnal Equinox occurs.
This usually happens around the 22nd of September. When the Sun moves up from below the celestial equator to above it, the point of intersection between the sun and the celestial equator is when Spring Vernal Equinox occurs.
Earth Facts: Interesting Facts about Planet Earth • The Planets
It usually happens around the 21st of March. During the equinoxes, all parts of the Earth experiences 12 hours of day and night and that is how equinox gets it name as equinox means equal night. At winter solstice Decthe North Pole is inclined directly away from the sun. At this point it will be at declination This cycle will carry on, creating the seasons that we experience on earth.
The earth is tilted Many scientists think the sun and the rest of the solar system formed from a giant, rotating cloud of gas and dust known as the solar nebula. As the nebula collapsed because of its gravity, it spun faster and flattened into a disk.Earth-Sun Relationship
Most of the material was pulled toward the center to form the sun. The sun has enough nuclear fuel to stay much as it is now for another 5 billion years. After that, it will swell to become a red giant. Eventually, it will shed its outer layers, and the remaining core will collapse to become a white dwarf. Slowly, this will fade, to enter its final phase as a dim, cool theoretical object sometimes known as a black dwarf.
NASA Internal structure and atmosphere The sun and its atmosphere are divided into several zones and layers. The solar interior, from the inside out, is made up of the core, radiative zone and the convective zone. The solar atmosphere above that consists of the photosphere, chromosphere, a transition region and the corona. Beyond that is the solar windan outflow of gas from the corona.
The core extends from the sun's center to about a quarter of the way to its surface. Although it only makes up roughly 2 percent of the sun's volume, it is almost 15 times the density of lead and holds nearly half of the sun's mass.
Next is the radiative zone, which extends from the core to 70 percent of the way to the sun's surface, making up 32 percent of the sun's volume and 48 percent of its mass.
Light from the core gets scattered in this zone, so that a single photon often may take a million years to pass through. The convection zone reaches up to the sun's surface, and makes up 66 percent of the sun's volume but only a little more than 2 percent of its mass. Roiling "convection cells" of gas dominate this zone. Two main kinds of solar convection cells exist — granulation cells about miles 1, kilometers wide and supergranulation cells about 20, miles 30, km in diameter.
The photosphere is the lowest layer of the sun's atmosphere, and emits the light we see. It is about miles km thick, although most of the light comes from its lowest third. A second example is the belief that the Sun revolved around the Earth. Only in the sixteenth-century, through the work of Copernicus, did we accept that, in fact, the Earth was merely a planet orbiting the Sun. Perhaps most importantly, it is during the last two centuries that science has allowed us to see that the Earth is both an ordinary and unique place in the Solar System.
On one hand, many of its characterisitcs are rather unexceptional. Atmosphere The ability for Earth to possess life is dependent in many ways on its atmosphere. Nitrogen and oxygen are essential to DNA and biological energy production, respectively, without which life could not be sustained. Additionally, the oxygen found in what is known as the ozone layer of the atmosphere protects the surface of the planet by absorbing harmful solar radiation. Remarkably, the significant amount of oxygen present in the atmosphere is due to the life found on Earth.
As a byproduct of making sugars, plants convert the carbon dioxide in the atmosphere into oxygen. Essentially, this means that without plants the amount of carbon dioxide in the atmosphere would be much greater and the oxygen levels much lower.
On one hand, if carbon dioxide levels were much higher, it is likely the Earth would suffer from a runaway greenhouse effect like that on Venus.
On the other hand, if the percentage of carbon dioxide were any lower there would not be a greenhouse effect at all, thus making temperatures far colder.
What is even more amazing than this percentage is that a single drop of liquid water is yet to be found on any other planet in the Solar System. In this regard, the Earth is truly unique.
In fact, life is believed to have first developed 3. The existence of the oceans is attributed to two sources. The first of these is the Earth itself. It is conjectured that large amounts of water vapor were trapped wintin the Earth during its formation. The second source is theorized to have originated from the ancient comets that struck the Earth.
Upon impact, they deposited substantial amounts of water ice on the planet.
- Sun and Earth
- What is the relationship between the sun and the earth?
When comparing the Earth to other solid bodies in the Solar System, its surface stands out due to its lacking impact craters. It is not that the Earth has been spared the numerous impacts by small bodies; rather, it is because the evidence of these impacts has been erased. Although there are many geological processes responsible for this, the two most important are weathering and erosion. In many ways these two mechanisms can be thought of as working in tandem. Weathering is the breaking down of surface structures into smaller pieces by the atmosphere.
Moreover, there are two types of weathering: