The portion of the moon that reflects sunlight back to earth changes causing the moons appearance to change
What is lunar phases
100
An event during which one object in space casts a shadew onto another
What is an eclipse
100
The spinning of a body such as a planet of its axis
What is rotation
100
A pattern of temperature and other weather trends
What is season
200
The difference in gravitational force
What is tidal force
200
The first lunar phase in the moon cycle
What is new moon
200
The darkest part of a shadow
What is an umbra
200
The time it takes a planet to complete one full rotation on its axis
What is day
200
When sunlight shines equally on the northern and Southern Hemispheres
What is Equinox
300
A water level that is higher than the average sea level
What are high tides
300
When the moon is halfway through its cycle
What is full moon
300
A spreading cone of lighter shadow
What is a penumbra
300
The motion of a body that travels around another body on space
What is revolution
300
The area of the sunlight is at a maximum in one hemisphere and its minimum in the other
What is solstice
400
Tides that have the smallest daily tidal range
What is neap tide
400
The last moon in the moon cycle
What is waning crescent
400
When the moon passes completely into earths umbra
What is Lunar Eclipse
400
One the earth completes a revolution
What is year
400
When earth is in this position during this month sunlight shines equally on both poles
What is September Equinox
500
The difference between the levels of ocean water during a high tide and low tide
What is tidal range
500
There are 8
What are moon phases
500
There are five of them
What is Lunar Phases
500
One of the 12 parts of the year
What is month
500
This position is opposite to the December solstice. Now the North Pole leans toward the sun and is in complete sunlight and the South Pole is in complete darkness