Definitions
The gaseous layer surrounding Earth or another heavenly body is called what?
Atmosphere
This device can determine wavelengths of light that come from an object.
Spectroscope
Mercury, Venus, Earth and Mars are all what type of planet?
Terrestrial Planets
Minor Planets, Comets and Meteors are all in what catergory?
Non-Planetary Bodies
A method of measuring a stars movement against the background of stars farther away, using trigonometry and geometry is called?
Stellar Parallax
The branch of science that deals with the physical universe beyond Earths atmosphere is what?
Astronomy
Super hot matter that is neither solid nor liquid nor gas is called what?
Plasma
Jupitar, Saturn, Uranus and Neptune are all what kind of planets?
Jovian Planets
The largest of the non-planetary bodies is what?
Minor Planets or Asteroids
Extremely dense, small stars about 1,000th the size of Earth are called?
Neutron Stars
A force of attraction existing between any two mases is called?
Gravity
Sunspots provide what evidence to scientist about the sun?
That the sun is rotating
The Moon orbits the Earth in a slightly what way?
Elliptical
The asteroid belt is located between which 2 planets?
Mars and Jupiter
In the late 1900s, astronomers discovered planets that orbited other stars. What are these planets called?
Extra solar planets or exo planets.
The amount of light or radiation reflected by a surface typically that of a plant or moon is called what?
Albedo
The moons shadow is called?
Umbra
The point when the moon is closest to the Earth is called?
The Moons perigee
While minor planets do not have the necessary surface gravity to hold an atmosphere, some do have enough gravity to keep what of there own?
Small Satellite
An organized system of millions or billions of stars, gas, solar systems and dust that are held together by gravitational attraction are called what?
Galaxy
The action of one surface material or object rubbing against another is called what?
Friction
We would freeze here on Earth if?
The sun was further away.
When the moon is between the Earth and the sun and we see no reflected sunlight this is called?
A new moon
Comets can collide with planets if they are pulled in by what?
Gravitational Force
The energy release of a white dwarf star if it gains enough mass from another star that it explodes is called what?
Supernova