Esps Astronomy

Esps Astronomy

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Question Answer
How old is the universe? 13.8 billion years old
What event began the Universe? The Big Bang Theory
What are the visible forms of light? ROYGBIV and the universe
What is a light year? The distance light travels in a year
Explain Redshift. How is blue shift different? Red shift is when objects are moving away from us. Blue shift is when its moving closer.
How is the universe moving and what shift of light do we see? The universe is expanding we see red shift
On the EM spectrum different colors happen because of what? Because of visible light, Different wavelengths, ROYGBIV
How does temperature relate to density? The colder something is the more dense it is and the hotter something is the less dense it is.
What are two ways you can increase gravity? Either increase the density of one object and put a smaller object next to it or put two objects closer together
What are CMBs and why are they important? CMB’s is the glow loft over from the big bang also known as the radiation. It's important because it gives us proof that the big bang happened.
How does density relate to gravity? Density effects how much gravity is on an object or objects.
What happens in the colder areas of the CMB? In colder areas of the CMB are more dense and more stars and galaxies form.
Stars and galaxies in the universe start in what type of temperature, density and gravity regions? They start in the colder regions with high density and high gravity.
Describe what the different colors in the CMB represent and how they are related to temperature and density Red colors are hotter and less dense while blue colors are colder and have more density
Describe the relationship between, wavelength, frequency and energy? Wavelength and frequency inverse if one goes up the other goes down. Frequency and energy are direct one goes up the other goes up. Wavelength and energy are inverse one goes up the other goes down.
Describe and Explain how the Universe got from the big bang to how it looks today (make sure to include density, temperature and star and galaxy formation.) The big bang occurred it was really hot. The universe had to cool down before stars and galaxies could form, this happened 300 million years after the big bang. It increased the density.
The early universe was primarily made up of what elements? Hydrogen, Helium, Lithium
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? A Massive star creates a supernova explosion. The core collapses when the fusion does not stop creating a supernova explosion.
How does a star's mass and elements change over it’s lifetime? Has more mass, heavier elements
What does an H-R diagram represent? Composition and temperature
What does analyzing the light that a star emits tell a scientist? It tells us the distance of a star.
What color are the hottest stars? What color are the coolest? The hottest stars are blue while the coolest stars are red
What is the difference between absolute magnitude and apparent magnitude? Absolute magnitude is how bright a star actually is while apparent magnitude is how bright a star appears froms earth.
In a main sequence star what fuses together? Hydrogen and helium

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