Question

refer to the h - r diagram to answer the following questions. 14. which type of star is characterized as having high luminosity and low surface temperatures? 15. which type of star is characterized as having low luminosity and high surface temperature? 16. the smallest stars have ____ surface temperatures and __ luminosity. 17. the biggest stars have __ surface temperatures and ____ luminosity. 18. how would you describe the luminosity and surface temperature of red giants? luminosity? surface temperature? 16. where do elements come from?

Explanation:

1. Red - giants are known for high luminosity and low surface temperature as they are large and emit a lot of light but have a relatively cool outer layer.
2. White - dwarfs are small, hot stars with low luminosity due to their small size despite high surface temperature.
3. The smallest stars (e.g., red - dwarfs) have low surface temperatures and low luminosity as they have less nuclear - fusion activity and small surface areas.
4. The biggest stars (e.g., super - giants) have a range of surface temperatures but generally high luminosity because of their large size.
5. Red giants have high luminosity due to their large size and low surface temperature compared to main - sequence stars of similar mass. Elements are formed through processes like nuclear fusion in stars (lighter elements) and supernova explosions (heavier elements).

Answer:

1. Red - giants
2. White - dwarfs
3. low, low
4. variable, high
5. High luminosity, Low surface temperature
6. Elements are formed through nuclear fusion in stars and supernova explosions.