a day when when Earth's rotaion axis is the most toward or away from the sun.
What is a solstice?
100
a satellite.
What is the moon?
100
the northern hemisphere and the southern hemisphere receive the same amount of sunlight. a day when Earth's rotation's axis is leaning along Earth's orbit, neither toward or away from the sun.
What is an equinox?
200
The path an object follows as it moves around another object.
What is orbit.
200
causes seasons
What is the tilt of Earth's rotation axis?
200
when day and night are almost equal in time.
What is an equinox?
200
formed when objects from space crashed into the moon.
What is a crater?
200
when the moon's shadow appears on the earth's surface.
What is a solar eclipse?
300
What keeps the Earth from flying off into space.
What is gravitational pull?
300
when northern hemisphere is close to the sun and receives more solar energy; daylight hours are longer.
What is spring and summer?
300
December 21 or 22.
What is winter solstice?
300
large, dark flat areas of the moon.
What is maria?
300
the phases of the moon
What are the new moon, waxing crescent, first quarter, waxing gibbous,
full moon, waning gibbous, third quarter, waning crescent?
400
A spinning motion with an imaginary line through its center.
What is rotation?
400
Regions near the poles receive less solar energy than regions near the equator.
Why is Earth warmer at the equator and colder at the poles?
400
March and September
What are the two equinoxes?
400
the light colored areas, older than maria, covered craters.
What are the highlands?
400
the central, darker part of the shadow where light is totally blocked.
the lighter part of the shadow where light is partially blocked.
What is the umbra and penumbra?
500
The motion of one object around the other
What is revolution?
500
Earth is farthest from the sun.
What is July?
500
June.
What is the longest day of the year?
500
because the moon rotates on its axis and revolves around the Earth in the same amount of time.
Why do we always see the same side of the moon?
500
full moon occurs during this uncommon event.
What phase of the moon is present during a lunar eclipse?