[2015] Gabriel Groark (Z_2015 6th): Earth + Moon + Sun

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by karisalomon
Last updated 7 years ago

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Science
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Astronomy

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[2015] Gabriel Groark (Z_2015 6th): Earth + Moon + Sun

Earth moves around the sun and rotates while it is moving. It takes the Earth 365 1/4 days to fully revolve around the sun, which makes up one year (with out the 1/4 day; after 4 years, an extra day is added to make up for the 1/4 days). The Earth's path to move aroudn the sun is not a perfect circle, it is an ellipse. It also takes 24 hours for Earth to fully spin 360 degrees. This causes day and night. While one part of the Earth faces the sun, it is day time while the other half, which is not facing the sun is night time. Day time might have more time than night time or it might be opposite. Only two times during the year, the spring equinox and the autumn equinox, are day time and night time perfectly the same at 12 hours each. Some places like the polls can recieve 24 hours of night or day during some seasons because it is always or never pointed towards the sun. There are four seasons during the year: Summer, Autumn, Winter, and Spring. The tilt of Earth's axis causes seasons. When the northern hemisphere is pointed towards the sun due to Earth's axis, it is experiencing summer. When the northern hemisphere is pointed away it is winter. Spring and autumn happen in between summer and winter. Each seasons is a total of 3 months to totatl 12 months, the amount of months in a year. To conclude seasons, Earth's tilted axis causes seasons to occur.

Earth + Moon + Sun

EARTH

Looking down at the north poll from space, it looks like the moon revolves around Earth in a counter-clockwise motion. The moon orbits Earth in an ellipse. Due to Earth's rotation, the moon rises in the east and sets in the west. For one full orbit, it takes the moon 27.3 days. The moon makes a full rotation at about the same time.

The sun is the center of our solar system. It doesn't move in the terms of our solar system but it does in other terms. It takes 25 days for the sun to fully rotate one time. From Earth's perspective, it rises in the east and sets in the west, However, from the galixy's perspective it moves all around the galixy including our solar system. It takes the sun (and solar system) about 230 million years to fully orbit the galaxy.

MOON

SUN

By: Gabriel Groark


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