science ch 20
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- 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