The amount of time it takes the Earth to complete one rotation.
This is the lighted side of the Earth.
This is the dark side of the Earth.
This line runs around the center of the Earth.
An imaginary line running through the Earth's center.
The motion of one object around another.
These two things effect the seasons.
These are patterns of temperature changes and other weather trends over the course of a year.
Sunlight shines equally on the northern and southern hemispheres during this.
During this time, the area of sunlight is at a maximum in one hemisphere and a minimum in the other hemisphere.
The amount of time it takes for the Moon to complete its orbit around the Earth.
The phases of the moon where the amount of sunlight grows.
The phase of the moon where no light is showing.
The phases of the moon where the amount of sunlight decreases.
The reason why we don't an eclipse every month.
When a shadow makes the Sun or Moon seem to grow dark.
During a solar eclipse, this object's shadow falls onto part of the Earth
During a lunar eclipse, the Moon passes through this object's shadow.
This is the darkest part of a shadow during an eclipse.
Which type of eclipse is more common?
The amount of tides that occur in a 24 hour period.
When the water level of the ocean is at its highest.
A tide where the highs are at their highest and lows are at their lowest.
A tide where the highs are at their lowest and the lows are at their highest.
Tides are caused by this object's gravity on the Earth's oceans.
