Universe Review Your Host: Mrs. Gibson
What unit do we use to measure distance in space?
Light year
How is a light year measured?
Distance light can travel in one year
Stars are classified by what 3 characteristics?
Size, temperature, and brightness
List the colors of the stars from hottest to coolest
Blue, white, yellow, orange, red
The Hertzsprung-Russel diagram measure what two things about the stars?
Temperature and Luminosity (Brightness)
List the types of stars from smallest to largest
Neutron star, white dwarf, medium, giant, supergiant
What process creates a protostar from a nebula?
Nuclear fusion
How long a star lives depends on its……
Mass….. More mass= shorter life
What type of star will explode in a supernova?
Realllllllly big stars……. supergiants
Black holes form from stars that are…..
Very large stars can become black holes
What happens when a white dwarf stops glowing?
Becomes a black dwarf
The Milky Way is what type of galaxy?
Barred spiral
What type of galaxy has no shape?
irregular
The theory that astronomers have developed that explains the formation of the universe is called…
Big Bang Theory And it all started with a big bang….BANG
The outermost layer of the sun that can be seen during a solar eclipse is the
Corona
A loop of gas that connects two sunspots on the surface of the sun is called
Prominence
What color and size is our sun?
Yellow and medium
What is the closest star to Earth?
Sun
90% of all stars are in the…
Main sequence
What causes stars to exit the main sequence and either become a red giant or supergiant?
It runs out of fuel and expands
Is our sun going to become a red giant or supergiant when it starts to die?
Red Giant
In the visible light section on the electromagnetic spectrum, what are the different types of visible light?
ROY G BIV Red orange yellow green blue indigo violet
A cloud of gas and dust is called a
nebula
What is a neutron star (do not say smallest star)
Piece of exploded supergiant
What types of waves are more dangerous, waves with low frequency or high frequency?
High frequency
A lump of plasma on the surface of the sun is called a…
Granule
An explosion on the sun is called…
Solar flare
TIME FOR FINAL QUESTION!! Make your wager!!!
Name all 6 types of waves on the electromagnetic spectrum!!! Yes, there are 6 and you must name them allllllllllllllllllllllllllllllllllllllllllllll.
Radio, Microwave, Visible Light, Ultraviolet, X-ray, Gamma