It takes approximately 365.25 earth days of 24 hours each to complete one orbit around the sun.
In calendars we just state 365 days, and we make up for the 0.25 days omitted in this calculation once every four years. This is called the 'leap year', where we have 366 days instead, with an extra day in February.
... all times.
Period of revolution
Sunlight strikes the equator directly, and over a shorter distance through the earth's atmosphere, so retains more heat. At the poles, the sunlight strikes at an angle, and the light travels further through the atmosphere, so being much cooler.
That varies from almost zero (black surfaces) to all of it (white & shiny surfaces).
The only movement that really matters is the Moon orbiting the Earth. The Sun shines, and sunlight strikes the Moon. The light bounces OFF of the Moon in all directions. We stand here on Earth watching the Moon go around the Earth. Some of the reflected sunlight comes back to Earth. As the Moon goes around the Earth, we see that it is daytime on some parts of the Moon, and night on the rest.
Tropic of cancer is the northerly circle of latitude on the Earth. Tropic of Capricorn is one of the five parts of the circles of latitude that mark maps of the Earth.
Ozone
The Earth's layer that sunlight strikes first is the ozone layer.
The angle at which the sunlight strikes the Earth
The phases are caused by the angle that the sunlight strikes the moon.
put earth and sunlight in the circle and you got darkness
It is the angle at which sunlight strikes the area.
The more acute the angle at which the sunlight strikes, the more atmosphere that sunlight must pass through. Passing through more atmosphere will weaken and dim the light beams. As the angle at which sunlight hits the earth changes, the same amount of sunlight is spread over different areas, so that near the poles each area of surface receives less intense radiation than an equivalent area near the poles.
Of course sunlight doesn't hit the earth's surface evenly! Countries on the equator or near it receive the most direct sunlight. And of course countries in the artic circle have hardly any! [^-^]
sunlight
The moon is never closer to the sun than to the earth. The apparent shape is based on the angle at which sunlight strikes the moon.
North of the arctic circle, or south of the antarctic circle, but only at certain times of the year.
North of the arctic circle, or south of the antarctic circle, but only at certain times of the year.
Sunlight strikes the equator directly, and over a shorter distance through the earth's atmosphere, so retains more heat. At the poles, the sunlight strikes at an angle, and the light travels further through the atmosphere, so being much cooler.