H-R Diagram
What is an H-R diagram?
A graphical plot astronomers use to classify and interpret the life cycle of stars.
What is a massive star?
Star that is larger than 8 solar masses during it's regular main sequence lifetime.
What is a wave length?
What is perihelion?
Point in orbit closest to the sun.
What is isostatic adjustment?
It is the balance between gravity and buoyancy.
How are stars plotted on the H-R diagram?
Stars are plotted as a star's luminosity vs it's temperature.
Which group of stars is very massive?
Global clusters.
What would be observed if the light emitted passed through a prism?
It would split the light into various wavelengths.
What is Aphelion?
Point in orbit farthest from the sun.
What is a hot spot?
A weak area in the crust where the magma breaks through.
Are giants and super giants young or old?
What color do massive stars appear to be?
Massive stars are bluer.
How is light useful to scientists?
The light can help scientists find the elements in a star.
What is a perihelion's orbital speed?
It is the same as any other point in orbit.
How does an increase in confining pressure affect a rock's melting temperature?
The temperature goes up.
Does the H-R diagram increase from left to right?
Yes the diagram places the low mass stars on the left.
What is the closest massive star to the Earth?
Alpha Centauri.
Why is light emitted by elements when they are heated?
The electrons in the atoms absorb the heat energy and jump to higher orbitals.
What is planetary motion about?
It describes the orbits of planets around the sun.
What is GSN?
It is the global seismographic network.
What does the H-R diagram show an increase of?
It shows the increase of luminosity with surface temperature and mass.
How long do massive stars live?
A few million years.
In metals.
Is a planet in elliptical orbit equal times the area swept out by the planet?
Yes because it is constant.
What is a subduction zone?