Question

1. the stars, rigel and betelgeuse, are both found in the constellation, orion. rigel is a blue supergiant, and betelgeuse is a red supergiant. which of the following correctly compares the temperatures of rigel and betelgeuse? a. rigel is hotter than betelgeuse because blue stars are hotter than red stars. b. betelgeuse is hotter than rigel because red stars are hotter than blue stars. 13. a student learns that a stars absolute brightness is determined by a combination of the stars physical properties. which of the following correctly describes the relationship between the absolute brightness of two stars that are the same size? a. the star that is hotter will have a higher absolute brightness. b. the star that is closer to earth will have a higher absolute brightness. 14. imagine that you are viewing a bright star in the night sky. which two factors most affect the observed brightness of the star? a. the solar flare and spots b. the stars size and distance 15. in one of the suns inner layers, hot material rises, cools at the suns surface, and then plunges back downward. which layer is this? a. radiative zone b. convection zone 16. in which area does nuclear fusion occur? in which area does nuclear fusion occur? layers of the sun directions: label the layers of the sun using the word - bank after reading the guide on the next page. name__________ word bank: chromosphere, convection zone, core, corona, photosphere, radiative zone, transition zone

Explanation:

1. Las estrellas azules son más calientes que las rojas. Rigel es azul y Betelgeuse es roja.
2. Para estrellas del mismo tamaño, la más caliente es más brillante absolutamente.
3. El tamaño de la estrella y la distancia a la Tierra afectan más la brillantez observada.
4. En la zona de convección del Sol, el material caliente sube, enfría en la superficie y luego desciende.
5. La fusión nuclear ocurre en el núcleo del Sol.

Answer:

1. A. Rigel es más caliente que Betelgeuse porque las estrellas azules son más calientes que las estrellas rojas.
2. A. La estrella que es más caliente tendrá una brillantez absoluta más alta.
3. B. El tamaño de la estrella y la distancia.
4. B. zona de convección
5. núcleo