Question

match each term in column a with its description in column b. write the correct letter in the space provided.
column a

1. star color
2. true brightness
3. red giants
4. apparent brightness
5. the sun

column b
a) a yellow star
b) stars not on the main sequence
c) depends on temperature
d) absolute magnitude
e) depends on distance
fill in the blank
complete each statement using a term or terms from the list below. write your answers in the spaces provided. some words may be used more than once.
blue - white
temperature
red giants
absolute magnitude
the sun
starlight
yellow
distance
hot gases
star

1. stars are made up of very ____________.
2. apparent brightness depends mostly on ____________.
3. the color of the hottest stars is ____________.
4. large, cool stars that are not on the main sequence are ____________.
5. “medium - hot” stars are ____________.
6. star color depends mostly on ____________.
7. ____________ is the light given off by stars.
8. the brightest star in our sky is ____________.
9. ____________ brightness depends on size and temperature.
10. the true brightness of a star is called ____________.

Explanation:

1. Stars are made of hot - gas plasma, so "hot gases" is appropriate.
2. Apparent brightness depends on the distance of the star from the observer.
3. The hottest stars are blue - white in color.
4. Red giants are large, cool stars not on the main sequence.
5. The sun is a medium - hot star and is yellow.
6. Star color is related to its surface temperature.
7. Starlight is the light emitted by stars.
8. The sun is the brightest star in our sky as it is closest.
9. True (absolute) brightness depends on size and temperature.
10. The true brightness of a star is called absolute magnitude.

Answer:

1. hot gases
2. distance
3. blue - white
4. red giants
5. yellow
6. temperature
7. Starlight
8. the sun
9. True
10. absolute magnitude