Vocabulary
What is the definition of orbit?
The path an object follows as it moves around another object.
What is the full moon?
What is the new moon?
When the moon is fully lit up with light. No dark spots.
When the moon is entirely dark. No light spots.
How far is the sun from Earth?
It's about 150 million km from Earth.
What is the theory about how the moon was formed?
A mars size object has collided with Earth, and the particle flew around in outer space, and then came together, and formed the moon.
When it is Summer in the northern hemisphere, what season is happening in the southern hemisphere?
Winter
What is the definition of revolution?
The motion of one object around another object.
What is the Waning Crescent?
What is the Waning Gibbous?
The last step until the new moon. A sliver of light left on the moon.
The first step to the new moon. When a small part of the moon slowly gets darker.
How much more massive is the sun than Earth?
It's moe than 300,000 times greater than Earth's diameter.
How many days does it take the moon to rotate?
It takes 27.3 days.
What are the eight phases of the moon?
Full Moon
Waxing Gibbous
First Quarter
Waxing Crescent
New moon
Waning Crescent
Third Quarter
Waning Gibbous
What is the definition of rotation?
What is the definition of a rotation axis?
A spinning motion.
A line on which an object rotates.
What is the Waxing Crescent?
What is the Waxing Gibbous?
This is when the moon slowly gets brighter, and closer to the full moon.
This is the third step to the full moon. When 3/4 of the moon is lit up.
Why does the Earth orbit the sun?
The gravitational pull between them.
How long does it take the moon to revolve?
It takes 27.3 days.
Where is the Sun, Moon, and Earth during the SOLAR eclipse?
It goes Sun, Moon, and Earth.
What is the definition of a solstice?
A day when Earth's rotation axis is the most toward or away from teh sun.
What is the First Quarter?
What is the Last Quarter?
The second step to the full moon, when half of the moon is lit up.
This is the second step to the new moon. When it is half lit up.
Why are the north and south poles so cold?
Because of the tilt of Earth. They are the farthest from the equator.
Do we ever see both sides of the moon?
No, because it spins, and the sun only shines a fraction on it at a time.
Where is the Sun, Moon, and Earth during the LUNAR eclipse?
It goes Sun, Earth, and Moon.
What is the definition of an equinox?
A day when Earth's rotation axis is leaning on Earth's orbit, neither toward nor away from the sun.
Why do we have seasons?
Because of the tilt of Earth's axis, and the spot where the sun shines during certain shines while the Earth is spinning.
How long is the lunar cycle?
It takes 29.5 days.
During high tide, where is the Moon in relation to Earth?
On the side closest to the hightide.
( Look on hte last page of your study guide for the picture)