Lesson 5: The Sun And Other Stars Flashcards
When heat is transferred directly through atoms/molecules it is called ____. When hear is transferred because of the movement of molecules/atoms it is called ____. When heat is transferred through waves that require no medium it is called ____.
Conduction, Convection, Radiation
The total energy a star gives off is called its ____.
Luminosity
How many magnitude 3 stars does it take to get as much light as one magnitude 2 star?
2.5
What best describes the relationship between absolute magnitude?
Absolute magnitude is the apparent magnitude an object would have at a distance of ten parsecs.
Star A is a first magnitude star. Star B is a sixth magnitude star. Which star is brighter and by how much?
Star A is 100 times brighter than star B.
In the parallax equation D = 1/p, which of the following units is used to measure the distance?
Parsecs
If a star is 8/5 parsecs away, what is it’s parallax angle (in fraction notation)? The parallax angle is ____ arc seconds.
1.6
“Parallax” is when an object’s ____ seems to shift as the point of view changes.
Position.
High mass protostars first become what kind of stars?
Blue stars
Which describes a nebula?
A large cloud of gas and dust.
The central core that remains after a supernova is known as what?
A neutron star
____ is the term for the prices of accumulating material through the collision of smaller pieces of mass, die to their gravity.
Accretion.
What is the correct order for the seven categories of stars?
OBAFGKM (Oh Boy, A Fine Guy Kissed Me.)
Stars that are hot, dim, and small are known as ____.
White dwarfs.
Stars that are considerably larger and brighter than normal red giants are known as ____.
Supergiants
