Which motion causes night and day on Earth?
A. the Sun’s motion around its axis
B. Earth’s motion around its axis***
C. Earth’s motion around the Sun
D. the Moon’s motion around Earth
I think the answer is B, but am I correct?
yes, the sun is high in the sky once a day as the earth spins
earth around sun combined with tilt of earth axis causes seasons. Sun is above the equator RIGHT now! Look quick!
Moon around earth causes tides
https://www.youtube.com/watch?v=ybZ9aAd-I2Y
Note sun declination on Nautical almanac.Declination is zero at 4 pm in Greenwich England, noon here.
http://www.tecepe.com.br/scripts/AlmanacPagesISAPI.dll/pages?date=03%2F20%2F2018
wow u smart thanks
Yes, you are correct! The motion that causes night and day on Earth is B. Earth's motion around its axis.
To understand why Earth's motion around its axis causes night and day, let's break it down:
Earth rotates or spins on its axis, which is an imaginary line that goes through the center of the Earth from the North Pole to the South Pole. As Earth rotates, one half of the planet is facing towards the Sun, while the other half is facing away.
The side of the Earth that is facing the Sun experiences daytime because the sunlight directly reaches that part of the planet. At the same time, the side of the Earth facing away from the Sun experiences nighttime because it is turned away from the Sun, and therefore is not directly lit by its light.
As Earth continues its rotation, the part that was in shadow moves into the sunlight, and vice versa. This rotation cycle takes 24 hours, causing the cycle of day and night.
So, Earth's motion around its axis is responsible for the alternating periods of day and night that we experience.