1. Revolution and rotation
The earth
Revolution and rotation

2. Our solar system is about 5 billion years old
Remember condensation?
The solar system was condensed from a cloud of gas.
The debris left over became the planets.
The earth is the “third rock from the sun”

3. Rotation The earth has an axis.
This is an imaginary line that passes through the earth. Like a top.
The earth spins on it’s
axis counter clockwise.
This is called rotation

4. Day and night The earth spins on Its axis once every
23hour,56min,& 4sec.
This causes day and
night. The side facing
the sun has day and the side away from the sun has night. Because the earth is opaque and light can’t shine through.

5. The earth is turning under the sun from west to east.
When we stand on the earth it seems like the sun rises in the east and sets in the west.

6. Tilt of the axis
Another cool thing about the axis is it’s not straight it is tilted at a 230 angle.
The axes are our north and south poles

7. Revolution
At the same time the earth travels a long pathway around the sun.
It takes 365 1/4 days to travel around the sun.
This is what we call a year.