Earth
This causes the Earth's seasons.
The Earth revolving around the Sun on its tilted axis.
The word "solar" refers to this object.
Sun
It takes this long for the moon to revolve completely around the Earth.
a month
This keeps the Earth and moon in their orbits.
gravity
This word describes the Earth spinning continuously.
rotating
The shape of the Earth
Sphere
When the sun is shining on one side of the Earth, this side is in
Day
Solar refers to the sun. This term refers to the moon.
lunar
It takes this long for the Earth to complete on full rotation.
24 hours
This imaginary line goes from the North Pole to the South Pole of the Earth.
axis
The Earth takes this long to revolve around the sun.
365 1/4 days
The sun rises in this direction.
East
During this phase of the moon, we can see no light from the moon.
new moon
The shape of the Earth's orbit around the sun
elliptical
This term is used to describe the phase of the moon when we see all of the lit side.
full moon
When it is winter in North America, it is this in Australia.
Summer
This occurs when the moon moves between the sun and the Earth, blocking some the the sun's light.
solar eclipse
During this process, the moon moves through the Earth's shadow, and cannot be seen for a short time.
lunar eclipse
The sun appears higher in the sky during this time of year because of the tilt of the earth.
summer
As we see less and less of the lit part of the moon, we say that it is doing this.
waning
The imaginary line horizontally around the middle of the Earth.
Equator
This is how the sun's rays strike the Earth in the summer.
Directly
The moon affects this part of the Earth, changing it daily on our beaches.
tides
We have this special day every 4 years in February because it takes the Earth 365 and 1/4 days to revolve around the sun.
leap year day
As we see more and more of the lit part of the moon, we say that it is doing this.
waxing