Stars/Composition of A Star
A ball of matter that is pulled together by gravity, and that gives off energy as a result of nuclear fusion
What is a Star?
The brightness depends on what 3 things?
What is size, temperature, and distance?
All matter energy and space was once squeezed into a very small volume, this resulted in a sudden expansion known as what?
What is the Big Bang?
Who discovered the red shift?
Who is Edwin Hubble?
When two atoms bond together to make one heavier atom the process releases large amounts of energy.
What is Nuclear Fusion?
What are the two types of magnitude?
What are apparent and absolute magnitude?
Which two element make up the universe?
What are hydrogen and helium?
What year was the red shift discovered?
When is 1929?
The two most abundant elements in stars.
What are hydrogen and helium?
What kind of magnitude is how bright a star looks to us?
What is Apparent magnitude?
When do scientists think the big bang occurred?
When is 13 billion years ago?
Light emitted from a star or galaxy can be separated into a band of colors, called a what?
What is a spectrum?
When elements in a star burn they give off what?
What is certain colors of light?
What kind of magnitude is how much light a star actually gives off?
What is Absolute magnitude?
Most scientist believe this about our universe.
What is that it is infinite and still expanding?
If a star is moving away from us, the light gets stretched out this makes it appear more what color than it really is.
What is red?
Scientists look at the light from a star through a what?
What is a spectroscope?
How many miles traveled in one year is a light year?
What is 5.8 trillion miles?
What is microwave radiation left over from the big bang
What is Cosmic Background Radiation?
If a star is moving toward us, the light gets squeezed this makes it appear more what color than it really is.
What is Blue?