Earth and Space Vocabulary
Terms in this set (35)
A star and all of the planets, moons, and other objects and materials that orbit(revolve) around that star.
point of view
A term used to describe the position from which an observation is made.
The distance above the Earth's surface.
When a body turns or spins in a circle
The orbiting of a celestial body around another.
Objects that give off light
An object that light cannot pass through
How does light travel?
An imaginary shaft on which the Earth rotates
The moon goes through a predictable series of changes about once every 28 days.
When the moon is completely illuminated and perfectly round
When the Moon is completely dark
Halfway between new moon and full moon
Halfway between full moon and new moon
When the moon is getting bigger
When the moon is getting smaller
Phases of the moon that are smaller than half moons
Phases of the moon that are larger than half moons
Either of the two times a year when the sun is at its greatest distance from the equator - December 21 or June 21
The time when the sun crosses the plane of the Earth's equator making day and night equal lengths of time - March 22 or September 22
The obstruction of light.
This occurs when the Earth casts a shadow on the moon.
This occurs when the moon casts a shadow on the Earth.
Right side of the moon is illuminated
Left side of the moon is illuminated
When your side of the Earth is facing the sun
When your side of the Earth is facing away from the sun
At any given time, how much of the Earth is in day and how much is in night?
What direction does the Earth rotate on it's axis, does the Earth revolve around the sun, and the moon revolve around the Earth?
How long does it take the Earth to travel around the Sun?
How long does it take the Earth to make one rotation on its axis?
about 28 days
How long does it take the moon to travel around the Earth?
about 28 days
How long does it take the moon to rotates once on it's axis?
How many stars do we have in "our" solar system?
What is a natural satellite?