Low Mass Stars
Is fusion is only in the core? T or F
True
Normally, do low mass stars have more or less luminosity than a high mass star?
Less
True or false: Supergiants are the most massive stars in the solar system
What is True
In the Morgan-Keenan System, the class and color of a star directly correlates with__________
What is the star's temperature?
The region of a star where radiation is being carried away from the core.
What is the radiative zone?
What is the last observed life stage of a low mass star?
a. red dwarf
b. black hole
c. white dwarf
d. supergiant
C. white dwarf
What is one end stage of a high mass star?
black hole, neutron star, or pulsar
At the center of supergiants there is a core made of this substance
What is iron?
Which of the following would be the hottest of stars:
a) red stars
b) yellow stars
c) blue stars
What is c) blue stars?
True or false: The upper part of the solar atmosphere is hotter than the lower part of the solar atmosphere.
To become a low mass star, a protostar must have a mass greater than _________ solar masses.
0.08 solar masses
After what life cycle stage do the high and low mass stars differ in what they become (by name)?
a. protostar
b. stellar nebula
c. black hole
d. star
d. star
If a red supergiant goes supernova, if it is greater than 15 solar masses, it forms _______(a)__________. If it is less than 15 solar masses, it forms ______(b)_________.
a) a black hole
b) a neutron star
ON the Hertzsprung-Russell diagram we see that more massive stars____________
What is either more luminous or have a lower magnitude?
Dark, planet-sized cooler regions on a star are called this:
What are sunspots?
All low-mass stars eventually move on to this next stage:
What gas primarily burns in high mass stars?
hydrogen
A neutron star is only 20 klm in diameter, but has a mass of ______________ (hint: greater than the Sun)
What is 1.4 solar masses?
According to the Hertzsprung-Russell diagram, we see that this type of star has the lowest luminosity (or greatest magnitude).
What are brown dwarfs?
Region of a star where there are cycling currents which take heat away from the star, and then sink as they cool:
What is the convection or convective zone?
This is a ball of gas which (hypothetically) remains after a white dwarf has radiated all of its heat.
What is a black dwarf?
Which ages more rapidly? A low mass or a high mass star?
High mass
Neutron stars which emit X-rays are known as this.
What are pulsars?
What, exactly, does the graph for Mass-Luminosity show?
What is as stars become more massive, they become more luminous
The lower part of the solar atmosphere which appears red during a solar eclipse:
What is the chromosphere?