Stellar Life Cycle

1.

1 point

The diagram used to represent the Brightness and temperature of different stars is called a:

Russell-Harper (RH) diagram

Penzias-Wilson (PW) diagram

Hertzsprung-Russell (HR) diagram

Gamow-Woodrow (GW) diagram

2.

1 point

1 solar mass is equal to the mass of:

The star Antares

The star Pollux

Earth

Our Sun (Sol)

3.

1 point

A High Mass star is considered to be a star with a solar mass of:

50 or higher

30 or higher

3 or higher

8 or higher

4.

1 point

When a Low Mass star reaches the end of it's Main sequence, it develops into what type of star?

A planetary nebula

A supernova

A red giant

A red supergiant

5.

1 point

The correct life cycle for a high mass star is:

Main sequence -> red giant -> supernova -> Neutron star OR black hole

Main sequence -> red supergiant -> supernova -> white dwarf

Main sequence -> red supergiant -> supernova -> Neutron star OR black hole

Main sequence -> red supergiant -> planetary nebula -> Neutron star OR black hole

6.

1 point

Which one of the following statements about a white dwarf star is FALSE?

A white dwarf is very bright and burns relatively cool

A white dwarf is a small star that is remnant of a low mass star near the end of its life

A white dwarf is relatively dim and burns very hot

A white dwarf will eventually burn out and become a brown/black dwarf

7.

1 point

Which is more useful to determine the brightness of a star?

Apparent magnitude - because it measures the actual brightness of a star

Absolute magnitude - because it measures how bright the star seems to humans on earth

Absolute magnitude - because it measures the actual brightness of a star

Apparent magnitude - because it measures how bright the star seems to humans on earth

8.

1 point

Four stars are measured for their absolute magnitude. Which of the following values shows the brightest star?

-3.4

+1.6

-1.6

+3.5

9.

1 point

Four stars are measured for their apparent magnitude. Using the following apparent magnitudes, which star is the absolute brightest star?

-3.4

0

+5

There is no way of knowing without working out the distance of the stars from earth

10.

1 point

A cooler main sequence star will burn ..............; and a hotter main sequence star will burn............

Blue: Red

Red; Yellow

Red; Blue

Green; Blue