Which of the following statement is correct regarding Star?
I. It is made up of gases.
II. They do not have their own heat and light.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1: Only 1.
Explanation:
Stars are massive and hot celestial bodies. Let us analyze the given statements:
1. Statement 1 (Correct): Stars are primarily composed of gases (mainly hydrogen and helium). They are immense, hot spheres of gas.
2. Statement 2 (Incorrect): Stars possess their own heat and light. They emit these in vast quantities. For instance, the Sun is also a star that possesses its own light and heat.
Note: Celestial bodies that do not possess their own light and heat, but shine by reflecting the light of stars, are called Planets.
Key Facts About Stars:
• Source of Energy: The process of Nuclear Fusion takes place at the core of stars, where hydrogen atoms fuse to form helium, generating immense amounts of energy and light.
• Distance: The Sun is the star closest to Earth. After the Sun, the nearest star to Earth is Proxima Centauri.
• Constellations: The patterns formed by various groups of stars in the night sky are known as constellations—for example, Ursa Major (Saptarishi).
Potential Questions for Upcoming Exams:
Question: Which is the nearest star to Earth after the Sun?
Answer: Proxima Centauri.
Question: Through which process is energy generated within stars?
Answer: Nuclear Fusion.
Question: Which direction does the Pole Star indicate?
Answer: The North direction.