Solar System

Revolution

The orbit of an object around another object

Rotation

The spin of an object around its axis.

Equainox

Occurs when Earth’s rotation axis is tilted neither forward nor away from the sun

Solistice

When the Earth’s rotation axis is tilted directly toward or away from the sun

Waxing

As the lit portion of the moon becomes larger the moon is waxing.

Waning

As the lit portion of the moon becomes smaller

Tide

Are the periodic rise and fall of the oceans surfaces cause by the gravitational force between Earth and moon and sun

Eclipse

Is the movement of one solar system object into the shadow of another object.

geocentric

The center of a rock

Heliocentric

The center of the sun

AU

Astronomical Unit

Elliptical

An orbit of the earth around the sun

Rotation

When one side of the world is having day time, the other side is having nighttime. 

Rotation

The sun appears to rise in the east and set in the west

rotation

The earth spins on its axis

Rotation

Completed in 24 hours

Rotation

Sunset happens as we begin to turn away from the sun

Rotation

We don’t feel the Earth spin because it spins smoothly, never changing pace.

Rotation

Sunrise happens as we begin to turn toward the sun.

Revolution

The earth orbits the sun.

revolution

The seasons change as the Earth orbits around the sun.

revolution

completed in a year

revoltuion

The sun appears higher in the sky during summer because we are tilted.

revoltuion

As the Earth orbits, the part of the earth tiltled toward the sun is having spring and summer. 

revolution

Each season lasts 3 months

revolution

As the earth orbits the part of the earth tilted away from the sun is having fall and winter.

revoltuion

Places near the equator doesn’t have much change in season because those places are always close to the sun.

Rotation

The earth spins on its axis at a constant speed, always in the same direction.