Moon Phases
How many moon phases do we see in the span of a month?
Eight
What is the cause of Earth's seasons?
The tilt of the Earth's axis
The Earth takes this long to rotate once on its axis.
24 hours
What is the imaginary line that runs from pole to pole on Earth?
The axis
It takes about one ______ for the Moon to revolve once around Earth.
Month
New Moon
If it is summer in the Northern Hemisphere, then what season is it in the Southern Hemisphere?
Winter
The Earth takes this long to complete one revolution around the Sun.
365 days (technically 365 1/4 days)
As we see less and less of the illuminated part of the moon, we say it is doing what?
Waning
How much of the Moon is illuminated by the Sun at any given time?
50%
This term is used to describe the Moon when we see all of its illuminated side.
Full Moon
The term solstice refers to which TWO seasons?
Summer and Winter
Where does the Sun appear to rise on Earth?
The east
Earth's yearly orbit around the Sun.
Revolution
Why do we have more hours of daylight in the summer than we do in the winter?
We are tilted towards the sun in the summer
First visible thin slice of the Moon.
Waxing Crescent
The term Equinox refers to which TWO seasons?
Fall and Spring
Why does Earth's equator have warmer temperatures than its poles?
It gets more direct/concentrated sunlight
The moving line on Earth that separates daylight from darkness.
The Terminator
Why do we only see one side of the Moon here on Earth?
The Moon's rotation and revolution take the same amount of time.
Starts after a full moon when more than half of the illuminated side is still visible.
Waning Gibbous
The longest day of the year is known as the what?
Summer Solstice
This keeps Earth and the Moon in orbit.
Gravity
If solar refers to the Sun, what term refers to the Moon?
Lunar
We have this special day every four years in February because it takes the Earth 365 1/4 days to revolve around the Sun.
Leap Year Day