Flash Cards for Understanding Stars and Their Classification

Front

What is a star?

Back

A star is a luminous celestial object that generates energy through nuclear fusion.

Front

What element are most stars made of?

Back

Hydrogen

Front

Who proposed the Harvard System of stellar classification?

Back

Annie Jump Cannon

Front

What class is the Sun?

Back

G

Front

What class is an orange star? Options: A, F, G, K

Back

K

Front

What is the temperature of a white star?

Back

6500 K

Front

What percent of stars spend their life as main sequence star?

Back

90%

Front

Stars of spectral class G with the highest luminosity

Back

Super Giants

Front

Stars of spectral class B with the lowest luminosity.

Back

White Dwarfs

Front

Barnard's Star has a temperature of 2,800, what is its spectral class?

Back

Spectral Class M