Evidence of the Big Bang
This tool allows us to analyze electromagnetic radiation emitted by distant stars and galaxies.
Spectroscopy
The catastrophic explosion that creates heavier elements such as barium (Ba).
Supernova
What color is the longest wavelength in the visible light spectrum?
Red
How long after the Big Bang did the very first stars form?
200 million years
The first force to exist in our universe was _________.
Gravity
The theory of redshift and blueshift
The Doppler Effect
The graph showing the relationship between magnitude and luminosity
HR diagram
What is redshift?
The increase in the wavelength of light as an object moves away, causing a shift toward the red end of the spectrum.
The first matter was formed from ___________.
Energy
What elements can be found in our sun?
Hydrogen (H) and Helium (He)
What is electromagnetic radiation from the Big Bang?
Cosmic Microwave Background (CMB)
A small dense star the size of the planet.
White Dwarf
How is redshift evidence of the Big Bang?
It shows that the universe is expanding.
How long after the Big Bang did Earth form?
9 billion years
The gravity here is so strong, not even light can escape.
Black Hole
This piece of evidence says that the creation of matter resulted from massive amounts of energy being released.
E = mc2
What stage of its life is our Sun currently in?
Main Sequence
As the source of a wave moves toward an observer, the observer perceives what change in the wave's frequency?
An increase.
1 second to 3 minutes after the Big Bang
1. Outward pressure
2. Inward gravity
What evidence says the universe is expanding and accelerating?
Hubble's Law
What is the average lifespan of a star?
50 million to 20 billion years
As the source of sound moves away from an observer, how does the pitch of the sound change?
It increases.
What are the two predictions for the future of our universe?
It will expand until it becomes cold and dark, or it will collapse and start all over again.
Name 5 things we can determine about distant stars by doing spectroscopy.
1. Temperature
2. Elements in them
3. Red/blue shifts
4. Size
5. Age