Stars
What is apparent magnitude?
Apparent magnitude is how bright a star appears as viewed from Earth.
What are the interior layers of the sun in order from the outside going in towards the center?
Convective (convection) zone, Radiative (radiation) zones, Core
The HR diagram shows the relationship between which two characteristics of stars
temperature(color) and Brightness (luminosity)
What are the names of the 3 main types of galaxies?
Elliptical, spiral, and irregular
True or False: You can determine the brightness (luminosity) of a star based on its color.
False: For example: A red star can be really dim or really bright
What are the two main elements that make up stars?
Hydrogen and Helium
List the sun's 3 outer layers starting from the surface and moving outward.
photosphere, chromosphere, corona
What color are the hottest stars on the HR diagram
Blue
Which type of galaxy consists of a large bulge in the middle surrounded by arms that spread outward in a circular way.
spiral galaxy
Which layer of the sun is the hottest?
the core
What is absolute brightness?
Absolute brightness how bright the star really is when compared at a standard distance.
Which layer of the atmosphere is characterized by its "reddish" color?
Chromosphere
Which category has the most (90%) stars?
Main sequence
Which types of galaxy is round, or oval shaped and contain very little gas/ dust. Few new stars are able to form here so stars in these types of galaxies tend to be fairly old.
What solar feature can be described as large reddish loops of relative cool gas that extend from the photosphere and often connect sunspots?
prominence
What are the 3 characteristics that are used to compare stars?
Temperature/ color
Size
Brightness
Which layer of the atmosphere is seen during a solar eclipse?
the corona
How does a stars size typically relate to its brightness
larger stars tend to be brighter
Less than 5% of known galaxies are classified as which type of galaxy?
Irregular
Which layer of the sun is characterized by hot gas rising to the surface, then cooling off and sinking back towards the interior.
Convective (convection) zone
What do you call a 2 star system?
A binary Star System
Which feature of the sun are dark areas that form on the surface of the sun because of gasses that are cooler than the surrounding areas?
sunspots
What does the HR stand for HR Diagram?
Hertzsprung-Russell
What type of galaxy is the Milky Way Galaxy?
a Spiral galaxy
What will the next stage of the Sun be in approximately 3-4 Billion years before it finally collapses to a white dwarf?
Red Giant