1pt 1 pt 1 pt 1pt 1 pt 1 pt 1 pt 1pt 1pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt Energy Life Cycle Galaxies Layers Misc. 1pt 1 pt 1 pt 1pt 1 pt 1 pt 1 pt 1pt 1pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt 1 pt 1pt 1 pt 1pt 1pt 1 pt 1 pt 1 pt 1 pt
Nuclear fusion combines hydrogen atoms into ____.
1 PT Helium
The source of the sun’s energy is ____.
2 PT Nuclear Fusion
In average sized stars, elements are fused down to ____ on the periodic table.
3 PT Iron
Elements heavier than iron can only form when massive stars go ________.
4 PT Supernova
What element begins nuclear fusion in a protostar? Eleanor M. Savko 1/17/2019
5 PT Hydrogen
Where are stars born?
1 PT Nebula
What are newly formed stars called?
2 PT Protostars
What are adult stars called?
3 PT Main sequence stars
What are middle aged stars called?
4 PT Red giants
What will our star eventually become when it dies?
5 PT Black dwarf
What is the name of our galaxy?
1 PT Milky Way
What is the name of the galaxies that have no definite shape?
2 PT Irregular
What are the galaxies called that are spherical or football shaped?
3 PT elliptical
What are the galaxies called that are shaped like pinwheels?
4 PT spiral
Who developed the tuning fork diagram of galaxy evolution?
5 PT Hubble
What layer of the sun produces the energy?
1 PT Core
What layer of the sun is the outermost one?
2 PT Corona
What layer of the sun produces the light we see?
3 PT photosphere
What layer of the sun produces the color that we see?
4 PT chromosphere
What are the dark areas on the surface of the sun called?
5 PT sunspots
Sunspots occur in cycles of how many years?
1 PT 11
What two things does the HR diagram relate?
Temperature and luminosity 2 PT Temperature and luminosity
On the HR diagram, do stars get brighter as you go up the scale or as you go down?
3 PT down
What are the objects whose gravity is so large that nothing can escape?
4 PT Black holes
When light gets pulled into a black hole, it gives off _________.
5 PT X-rays