GK
THE UNIVERSE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of the following best describes a star? A star is a celestial body ____
|
|
composed of rock and metal with a very high density
|
|
|
that is too big to be an asteroid, but too small to be a planet.
|
|
|
that rotates on an axis and revolves around the Sun
|
|
|
composed of gases that emit light due to nuclear reactions
|
Explanation:
Detailed explanation-1: -What is a Star? A star is a large celestial body made of mostly hydrogen and helium gases that emits light due to nuclear (fusion) reactions.
Detailed explanation-2: -A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.
Detailed explanation-3: -Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores. Aside from our sun, the dots of light we see in the sky are all light-years from Earth.
There is 1 question to complete.