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Science

Science Final

QuestionAnswer
How old is the universe? 13.8 billion years old
What event began the universe? The big bang
What are the visible forms of light? Radio waves, infrared radiation, ultraviolet radiation, X-rays and microwaves.
What is a light year? The distance light travels in a year
Explain reshift How is blueshift different? redshift moves away blueshift moves towards you
How is the universe moving and what shift of light do you see? expanding and redshift
On the EM spectrum different colors happen because of what? the wavlength
How does temperature relate to density? the hotter the more dense
What happens in colder areas of the CMB? more gravity and more dense
Describe what the different colors in the CMB represent and how they are related to temperature and and density? represent stars
Describe the relationship between wavelength, frequency, and energy? wavelength, frequency, and energy all determine stars
Describe and explain how the universe got from the big bang to how it looks today? the big bang created the solar system
The early universe what primarily made up of what elements? hydrogen and helium
What is the ratio of hydrogen to helium in the early universe? 3H, 1He
What does the process of nuclear fusion release? energy
Describe what kind of star creates a supernova explosion? white dwarf
What does a star's mass and elements change over its lifetime? heavier elements
What does an H-R diagram represent? surface temperature, luminosity and type of star
What does analyzing the light a star emits tell a scientist? the brightness of a star
What color are the hottest stars? Blue
What color are the coldest stars? Red
What is absolute magnitude? measured from specific distance
What is apparent magnitude? measured from earth
What is a nebula? a cloud of dust and gas in outer space
What is a neutron star? when a giant star dies
What is a black hole? gravitational field so intense nothing can escape
What is a supernova? explosion of star
Created by: avinaaa
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