1.a
What is a Nebula
The birth place of stars
What color are hotter stars?
Blue
What role does temperature play in determining a star's color?
the brighter the color the more hot the planet
What does the equation E=mc² represent?
Energy equals mass times the speed of light squared.
What happens to a red giants core?
It shrinks and cools down
Neutron Star or Black hole?:
-immense gravity
-light can't escape from
-from a high massed star's core that collapsed
Black Hole
What are the differences between neutron stars and black holes?
If the core is less dense, it becomes a neutron star. A neutron star is made almost all of neutrons. If the core is more dense, it becomes a black hole
What is nucleosynthesis and how is it related to life on Earth?
creation of new atom nuclei, which is the basis of life on Earth.
What element is primarily formed from the fusion of hydrogen nuclei?
Helium
What does the Hertzsprung-Russell (H-R) diagram plot?
temperature and brightness
How does the energy produced in stars contribute to the formation of heavier elements
Heavy elements are produced by nucleosysthesis - the fusion of nuclei deep within the cores of stars.
what is the conditions necessary for nuclear fusion to occur in stars?
Very hot temperature, about 4x10^6k.
What does E=Mc^2 represent?
The loss mass of hydrogen during hydrogen fusion that's converted into energy.
Which axis of the H-R diagram represents a star's brightness?
Upper left
What is nucleosynthesis
the creation of new atomic nuclei, the centers of atoms that are made up of protons and neutrons
How does the energy produced in stars contribute to the formation of heavier elements?
The fusion of nuclei within the core of the star, creating heavier elements.
How long can energy produced by the star power them?
Billions of years
What color do hotter stars appear on the H-R diagram?
blue or white
how is nuclear fusion a source of energy for stars
because the total mass of the resulting single nucleus is less than the mass of the two original nuclei
what are the implications of stellar energy production on the evolution of the universe?
it provides energy and gravitational pull to keep planets in orbit.