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21 Cards in this Set

  • Front
  • Back
What fuel is used by stars to make energy?
Hydrogen
What do you call the cloud of dust and gases that pulled together to make a star?
Nebula
This is the process that produces star energy
Thermonuclear fusion
What unit is used to measure distances in deep space?
Light Year
What is the speed of energy?
300,000 km per second
( 300,000 km/sec )
This is the feature of star that you study to determine its temperature.
Color
What instrument is used by astronomers to determine the composition of a star?
Spectroscope
What do you call the part of the sun where light is first emitted?
Photosphere
What is an exploding star called?
Supernova
Why is our sun the brightest star in the sky?
It is the closest.
What do you call the harmful radiation rays from the sun that can cause skin cancer?
Ultraviolet
These are dark, cooler areas on the sun's photosphere.
Sunspots
When we see the sun, we are really looking at its .....
Photosphere
Where is energy given off the bye sun produced?
Core
What feature of the sun is usually associated with prominences and solar flares?
Sunspots
If you want to know what gases a star is made of, you would need to analyze what?
Spectrum
A star's luminosity is also called its.....
Brightness
what is the name of the graph that is used to help explain stellar evolution?
H-R diagram
The hottest stars are what color?
Blue white
Our galaxy, the Milky Way is what kind of galaxy?
Spiral
Solar energy is the result of what?
thermonuclear fusion