Vocabulary
The branch of science that deals with the physical universe beyond Earth's atmosphere.
astronomy
a pattern of stars
constellations
When the moon perfectly shields the sun’s light so that only its atmosphere is visible.
a total eclipse
How many planets are there?
eight
The action of one surface, material, or object rubbing agains another.
Friction
The gaseous layer surrounding Earth or another heavenly body.
atmosphere
Substance that covers the sun.
Plasma
These dot the entire surface of the moon and are primarily formed by impacts from other astonomical objects colliding on the surface.
craters
The point where a planet is closest to the sun is called the ________________.
perihelion
When the moon is big and bright in the sky, we call it a _____________ moon.
Full
A force of attraction existing between any 2 masses.
gravity
These provide evidence that the sun is rotating.
Sun spots
What do we call a moon that appears to be getting bigger in the sky?
waxing
The Earth is considered a natural satellite of the ___________.
sun
This type of telescope reflects light using a mirror.
reflecting telescope
A natural or artificial body orbiting a planet or star.
a satellite
The sun is made up of 3 layers. The convective zone, the radiative zone, and the ___________.
the core
The amount of light or radiation reflected by a surface, typically that of a planet or moon.
Albedo
Pluto is considered a ______________ planet.
dwarf
This type of telescope contains 2 glass lenses.
refracting telescope
An organized system of millions or billions of stars, gas, solar systems, and dust that are held together by gravitational attraction.
a galaxy
How far away is the sun?
about 93 million miles away
This is the result of a supernova observed in AD 1054. It is about 10 light-years away and has a pulsar at its center.
The Crab Nebula
Planets are seperated into two groups, Jovian and ___________.
terrestrial
The vehicle used to explore the surface of the moon is called a ___________ ________________.
lunar rover