Show:
Big Bang Theory
HR Diagram
Star Life Cycle
Galaxies
Miscellaneous
100
True or False: The Big Bang says that the universe is getting smaller.
False.
100
As you move ____ (up/down) the diagram, luminosity increases.
Up
100
All stars begin as this.
What is a nebula.
100
The name of our galaxy.
What is the Milky Way.
100
The theory of how the universe formed.
What is the big bang.
200
The age that many scientists think our universe is.
13.7 billion years old
200
As you move _____ (left/right) the temperature of the stars increases.
left
200
What determines how long a star will exist?
What is its mass. Stars will more mass live shorter than stars with less mass.
200
A huge group of single stars, star systems, star clusters, dust, and gas bound together by gravity.
What is a galaxy.
200
What is the process of turning hydrogen into helium?
Nuclear Fusion
300
As galaxies move farther away from us, the color that scientists see is...
Red
300
What color are the coolest stars on the diagram?
Red
300
What stage will our sun be in when it is out of Main Sequence?
Red Giant
300
The shape of our galaxy.
Spiral
300
What stage does a massive star explode?
Supernova
400
Give 2 examples of the Doppler Effect.
Accept a variety of answers.
400
Which category do most stars fall into on the diagram?
Main Sequence
400
What is the final stage of our sun?
White Dwarf
400
Describe the three types (shapes) of galaxies.
What is spiral (pinwheel), elliptical (oval) and irregular (no regular shape).
400
When a star becomes a White Dwarf, it is about the same size as...
Our Earth
500
Describe Cosmic Background Radiation.
Faint layer of energy that is all throughout the Universe and has similar temperatures. It is believed to be leftover energy from the Big Bang.
500
Which type of star has a higher luminosity but has a cooler temperature?
Red Supergiants
500
What is the stage called where massive stars completely collapse on themselves because gravity is so strong?
Black Hole
500
Put the following in the correct order from smallest to largest. Star, planet, galaxy, universe, solar system
planet, solar system, star, galaxy, universe
500
How does cosmic background radiation help give evidence to the Big Bang Theory?
It shows that all of the energy came from a single event, the Big Bang.