Astronomy Exercise 18 Classifying Stars

Using the Figure 1, pick the description that best matches a RED SUPERGIANT

• a main sequence star in the center of the Milky Way

• temperature around 3,500 K

• magnitude ranging from +5 to +15

• temperature around 5,000 K, magnitude from 0 to -5

• group of stars that is most varied in size and absolute magnitude

Using the Figure 1, pick the description that best matches the SUN

• a main sequence star in the center of the Milky Way

• temperature around 3,500 K

• magnitude ranging from +5 to +15

• temperature around 5,000 K, magnitude from 0 to -5

• group of stars that is most varied in size and absolute magnitude

Using the Figure 1, pick the description that best matches a WHITE DWARF

• a main sequence star in the center of the Milky Way

• temperature around 3,500 K

• magnitude ranging from +5 to +15

• temperature around 5,000 K, magnitude from 0 to -5

• group of stars that is most varied in size and absolute magnitude

Using the Figure 1, pick the description that best matches a RED GIANT

• a main sequence star in the center of the Milky Way

• temperature around 3,500 K

• magnitude ranging from +5 to +15

• temperature around 5,000 K, magnitude from 0 to -5

• group of stars that is most varied in size and absolute magnitude

Using the Figure 1, pick the description that best matches a MAIN SEQUENCE STAR

• a main sequence star in the center of the Milky Way

• temperature around 3,500 K

• magnitude ranging from +5 to +15

• temperature around 5,000 K, magnitude from 0 to -5

• group of stars that is most varied in size and absolute magnitude

Using Figure 2, what type of star does letter D represent?

• red giants

• white dwarfs

• red supergiants

• hot, blue stars

Using Figure 2, what does A indicate on the diagram?

• the Sun

• a red giant

• a red dwarf

• a blue dwarf

Using Figure 2, main sequence stars are represented on the diagram by which letter

• A

• B

• C

• D

The brightness of a star as seen from Earth is called

• its spectrum

• absolute magnitude

• apparent magnitude

• its composition

As a star changes form blue to red, the temperature of the star

• stays the same

• increases, then decreases

• increases

• decreases