Earth Facts. Gallegos Elementary Science/Tech. Dept.
-
Upload
alfred-leonard -
Category
Documents
-
view
218 -
download
0
Transcript of Earth Facts. Gallegos Elementary Science/Tech. Dept.
Earth Facts.
Gallegos ElementaryScience/Tech. Dept.
Earth is the 3rd planet from the Sun.
It takes the Earth 1 year or 365 days to orbit/revolve around the Sun.
Earth is a water planet.
Around 75% of the Earth is water.
25%
25%25%
25%
Land Water Water Water
Of all the water on Earth we can only drink less than 1% of it.
The Earth is divided into 4 hemispheres.
If the Earth is a sphere.
What is a hemisphere?
Then a hemisphere is half a sphere.
There are the Northern and Southern Hemispheres.
Northern Hemisphere
Southern Hemisphere
We live here.
There are the Western and Eastern Hemispheres.
Western Hemisphere
Eastern Hemisphere
We live here.
Earth also has an imaginary line called an axis.
Axis
Axis
Axis
Axis
The Earth rotates/spins on its axis.
It takes the Earth 1 day or 24 hours to rotate/spin on its axis.
Axis
Axis
The Earth’s rotation on it’s axis also gives us night and day.
Daytime
Night timeAxis
Axis
The axis of the Earth also shows that the Earth is tilted to one side.
Axis
Axis
The tilt of the Earth gives us Summer and Winter.
Axis
Axis
When the axis of the Northern Hemisphere is tilted toward the Sun it is our Summer.
Axis
Axis
Summer in the Northern Hemisphere.
Winter in the Southern Hemisphere.
When the axis of the Northern Hemisphere is tilted away from the Sun it is our Winter.
Axis
Axis
Winter in the Northern Hemisphere.
Summer in the Southern Hemisphere.
The 4 Seasons
Summer
Spring
Winter
Fall
Review the following Earth Facts.
• Earth takes 1 year or 365 days to orbit/revolve around the Sun.
• Around 75% of the Earth is water.• Earth has 4 hemispheres. We live in the Northern
Hemisphere• It takes the Earth 1 day or 24 hours to spin on its axis.• Day and night are caused by Earth’s rotation on its
axis.• The seasons such as Summer and Winter are caused
by the Earth’s tilt.
The End