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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

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

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

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HeloísaMestre · Tutor por 5 anos

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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.
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