Deck 56: The Temperatures and Compositions of Stars

Question 1

An O star is about _______ degrees surface temperature.

A) 3000 K
B) 6000 K
C) 12,000 K
D) 30,000 K

Answer 1

30,000 K

Question 2

The hotter the star, the bluer it is. This is a consequence of _______.

A) Planck's Law
B) Wien's Law
C) Stefan's Law
D) Kepler's Law

Answer 2

Wien's Law

Question 3

M stars have a surface temperature of about ______ .

A) 3000 K
B) 6000 K
C) 12,000 K
D) 30,000 K

Answer 3

3000 K

Question 4

The Balmer lines in a spectrum are the signature of

A) hydrogen
B) helium
C) calcium
D) mercury

Question 5

Wien's law shows the temperature range of normal stars is from _____ to ____.

Question 6

The full spectral type sequence from hottest to coolest stars is given by ___________________.

Question 7

Our sun is a G star.

Question 8

The star temperature classification that is just cooler than the sun is the F star.