Pergunta
Which of the following is an example of a red giant star? Choose 1 answer: A Betelgeuse B The Sun C Sirius D Alpha Centauri
Solução
Verification of experts
4.6224 Voting
HeloísaMestre · Tutor por 5 anos
Responder
A
Explicação
## Step 1
A red giant star is a star that has exhausted the hydrogen in its core and has begun to burn helium. This causes the star to expand and cool, giving it a red color.
## Step 2
Among the options provided, Betelgeuse is a well-known red giant star. It is part of the Orion constellation and is one of the largest stars in the night sky.
## Step 3
The Sun, Sirius, and Alpha Centauri are not red giant stars. The Sun is a yellow dwarf star, Sirius is a blue-white main sequence star, and Alpha Centauri is a main sequence star.
A red giant star is a star that has exhausted the hydrogen in its core and has begun to burn helium. This causes the star to expand and cool, giving it a red color.
## Step 2
Among the options provided, Betelgeuse is a well-known red giant star. It is part of the Orion constellation and is one of the largest stars in the night sky.
## Step 3
The Sun, Sirius, and Alpha Centauri are not red giant stars. The Sun is a yellow dwarf star, Sirius is a blue-white main sequence star, and Alpha Centauri is a main sequence star.
Clique para avaliar: