How does the sun hit the earth in autumn?

Answer 1

Nuclear power is the only thing that gives life to our sun.Nuclear power can be produced in two ways namely nuclear fission and nuclear fusion.Inatomic power plants nuclear fission is taking place in which uranium-235 atom splits into fast moving lighter elements.But in nuclear fusion energy isnproducednby fusing nuclei like hydrogen to more massive helium.This same thing is happening in our sun.Obviously it is very hard to produce energy through nuclear fusion in our earth as it requires very high temperature and pressure and also the process has to overcome the repulsion between the same positively charged hydrogen atoms.Fusion involves low mass nuclei whose combined mass is more than the resulting fused massive nucleas.The loss of mass in the process is converted to energy according to Einstein's law of conservation of mass.E=ms2.Here m=loss of mass in the process and c=velocity of the light.

Answer 2

In autumn, the angle at which the sun's rays hit the Earth becomes lower in the Northern Hemisphere, leading to shorter days and cooler temperatures as the sunlight is spread out over a larger area. This is due to the Earth's axial tilt and its position in orbit around the sun during this time of the year.

Answer 3

From the fusion of hydrogen into helium. In the sun, the dominant process is the proton-proton chain reaction, though there's also a contribution from something called the CNO cycle. The net result of both is essentially the same: four hydrogen atoms fuse into a helium atom. However, the intermediate steps are different.

Answer 4

well with the sun but the ozone also helps us because it protect us from ultra violet radiation which can harm us really bad

========================================

All of the light and heat on earth arrives as electromagnetic radiation from the stars.

The contribution of all the other stars is so tiny that it can be neglected completely,

in comparison with the amount that comes from the sun.

Answer 5

The sun's energy is the product of sustained, continuous nuclear fusion in its

core, where hydrogen nuclei are fused to form helium nuclei, with a small portion

of their mass being converted to energy in the process.

There ought to be better comparisons to mention, but the only place on Earth

where the same process occurs is in the explosion of a "hydrogen" bomb. The

same thing has gone on continuously in the sun's core for a few billion years,

and there's still enough hydrogen there to keep it going for a few billion more.

Answer 6

8.33 minutes

(8 and 1/3) minutes

8 minutes 20 seconds

This is a break down of the speed of light over distance.

To reach the sun at light speed which is 1AU away appx 92-94 million miles away light travels at 186,000 miles a second.

186,000*60=11,160,000 miles a minute

92,000,000/11,160,000=8.2437 min

94,000,000/11,160,000=8.4229 min

8.2437+8.4229=16.6666/2=8.33 min is the mean time for light to reach the sun from earth or earth to the sun.

Answer 7

By direct radiation, just as the light from a light bulb reaches you, but obviously over a much greater distance! However, not all of the radiation emitted by the sun reaches earth as there are various 'filters' in the way.

Answer 8

Solar photovoltaic uses photons from the sun to displace electrons to a higher orbit, and thus they carry more energy. These electrons' energies are converted into power.

Solar Thermal uses the sun to heat up tubes of water, which produces energy much in the same way that geothermal produces power.

Answer 9

Please be clear at no time does the Sun actually hit the Earth, the Earth is in orbit round the Sun at a distance of about 152,097,701 km.

However if what you want to know is how does the Sun's light hit the Earth in autumn, then both autumn and spring are the times of the equinoxes the point when the Sun is directly overhead at the Earth's equator. This means that all parts of earth up to both pols have a 12 hour day and a 12 hour night.

In mid summer and mid winter the Sun is overhead at either the tropic of Cancer or Capricorn at which position the nearest pole will have 24 daylight and no night and the opposite pole will have 24 hour night and no daylight.

Answer 10

Nuclear fusion (also called stellar nucleosynthesis because it forms new elements).
Hydrogen fusing unto helium at the Sun's core is the primary source of energy being radiated from the Sun. Fusion is initiated by the intense gravitational attraction of the Sun's huge mass, crushing the atoms of hydrogen together with tremendous pressure and heat.
It takes hundreds of years for the heat energy to be carried to the Sun's surface (the photosphere) from which it is radiated into space.