Hr Diagram Questions
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Name _____________________________ Period __________ Date _____________
H-R diagram
Figure 25-2 1. Based on Figure 25-2, list the types of stars. 2. Using Figure 25-2, what is the approximate absolute magnitude of Rigel? 3. According to Figure 25-2, is Antares or Vega hotter than the Sun? 4. Using Figure 25-2, what type of star is Betelgeuse? 5. According to Figure 25-2, is the Sun brighter than a white dwarf? 6. Define absolute magnitude using Figure 25-2? 7. What units does the H-R diagram use to measure temperature? 8. What temperature is the coolest white dwarf in the diagram?
Name _____________________________ Period __________ Date _____________
H-R diagram Answer Section SHORT ANSWER 1. ANS: white dwarf, main sequence, giant, supergiant PTS: 1 2. ANS: –2.5
DIF: A
OBJ: 8/3
PTS: 1 3. ANS: Vega
DIF: A
OBJ: 2/1
PTS: 1 4. ANS: a supergiant
DIF: A
OBJ: 7/3
PTS: 1 5. ANS: yes
DIF: B
OBJ: 7/3
PTS: 1 DIF: A 6. ANS: increasing brightness
OBJ: 7/3
PTS: 1 7. ANS: Kelvin PTS: 1 8. ANS: close to 9000K PTS: 1
H-R diagram
Figure 25-2 1. Based on Figure 25-2, list the types of stars. 2. Using Figure 25-2, what is the approximate absolute magnitude of Rigel? 3. According to Figure 25-2, is Antares or Vega hotter than the Sun? 4. Using Figure 25-2, what type of star is Betelgeuse? 5. According to Figure 25-2, is the Sun brighter than a white dwarf? 6. Define absolute magnitude using Figure 25-2? 7. What units does the H-R diagram use to measure temperature? 8. What temperature is the coolest white dwarf in the diagram?
Name _____________________________ Period __________ Date _____________
H-R diagram Answer Section SHORT ANSWER 1. ANS: white dwarf, main sequence, giant, supergiant PTS: 1 2. ANS: –2.5
DIF: A
OBJ: 8/3
PTS: 1 3. ANS: Vega
DIF: A
OBJ: 2/1
PTS: 1 4. ANS: a supergiant
DIF: A
OBJ: 7/3
PTS: 1 5. ANS: yes
DIF: B
OBJ: 7/3
PTS: 1 DIF: A 6. ANS: increasing brightness
OBJ: 7/3
PTS: 1 7. ANS: Kelvin PTS: 1 8. ANS: close to 9000K PTS: 1
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