Approximately 28 1/2 days.
around every 30 days.
The same as Earth - Earth and Moon orbit the Sun together.
The Earth takes approximately 365.25 days to complete one orbit around the Sun, which is known as a year.
Sort of. The definition of a month is one moonth ... one lunar cycle.
the earth takes 365 1/4 days to orbit the sun . :)
around every 30 days.
90 days and 2 sec
29.5 Earth years.
No. The moon orbits the Earth which orbits the Sun.
687 earth days
There is no 'phrase' or mnemonic for this because the order of the Sun, Earth and Moon changes as the Moon orbits the Earth. Remember - planets obit a star (the Sun is a star) - Earth is a planet moons orbit planets - The Moon is a moon.
The same as Earth - Earth and Moon orbit the Sun together.
The Earth takes approximately 365.25 days to complete one orbit around the Sun, which is known as a year.
NO
It is an ELLIPSE. The Sun is NOT at the centre of the ellipse, but at one on the foci. Not only is the orbit elliptical , but this ellipse over time fattens ( becomes nearly circular) , or becomes a very narrow ellipse. The foci ( plural of the noun 'focus'), are two points inside the ellipse, on the major axis, where is you draw an ellipse with pins paper and string, are the two points were the pins are inserted. This ellipse does not quite close up. Each year there is a slight overlap in the orbited track . This has been observed with Mercury's orbit. Because the Sun is at one of the foci , the Earth's orbital track , speeds up near the Sun and slows down furthest away from the Sun. Also Equal Arcs of this orbit are swept in equal times. Have a look in Wikipedia , under ' Johannes Keppler ' .
1957
Yes. That and the the fact that the earth revolves around the sun. Those two things. If the earth was not tilted with respect to its obit, there would be no seasonal change.