Movie Intro

Transcript

00:08

00:08

00:12

Earth's Revolution and Rotation

00:19

This is Earth

00:23

We all might know what happens down in Earth but what about outside in space?

00:30

Earth is the  third planet from the sun and is  also the planet  we live on

00:36

It rotates on its axis, an  invisible line that goes  all the way through Earth.

00:38

The axis has a tilt of 23.4 degrees

00:43

The process of Earth spinning counter-clockwise on its axis is called a rotation

00:48

It takes the Earth 24 hours to do one full rotation. This along with the sun helps create day and night

00:48

It takes the Earth 24 hours to do one full rotation on its axis. This is what makes day and night not the Sun.

00:55

As most of you know the moon orbits around the Earth. This is what causes different moon phases

00:58

On this diagram you can see the 8 main moon phases.

01:04

When Earth orbits around the Sun  while it is rotating on its axis it is called a revolution.

01:08

It takes Earth 365 days to do one full  revolution around the Sun or a year.

01:14

The Seasons  And What Causes Them

01:18

Now that you know what causes  day, night, moon phases, and our  year you might wonder....

01:22

What causes our seasons?

01:24

Well our seasons are not caused because of the clouds or anything down on Earth

01:31

The earth's spin axis is tilted with respect to its orbital plane. This is what causes the seasons. 

01:36

When the earth's axis points towards the sun, it is summer for that hemisphere. When the earth's axis points away, winter can be expected.

01:43

Now why don't we head back to Earth

01:54

THE END