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Why does a star produce its own light and heat?
Question:
Why does a star produce its own light and heat?
Choose the correct answer:
- A. Nuclear fission
- B. Nuclear fusion ✅ Correct
- C. Chemical reaction
- D. None
Explanation:
Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
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Related MCQs
Name the branch of astronomy that involves the origin and evolution of the universe.
Explanation:
Cosmology is "the scientific study of the large-scale properties of the universe as a whole."
Cosmology is "the scientific study of the large-scale properties of the universe as a whole."
Which theory explains the origin of the universe?
Explanation:
The Big Bang was 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded.
The Big Bang was 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded.
Big bang theory was proposed by
Explanation:
Georges Lemaitre was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
Georges Lemaitre was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
Who proposed the theory of the expanding universe?
Explanation:
American astronomer Edwin Hubble discovered in the 1920s that the Universe is expanding by showing that most galaxies are receding from the Milky Way and the farther away they are, the faster they are receding.
American astronomer Edwin Hubble discovered in the 1920s that the Universe is expanding by showing that most galaxies are receding from the Milky Way and the farther away they are, the faster they are receding.
Who proposed the steady-state theory?
Explanation:
The steady-state theory was first proposed by Sir James Jeans in the 1920s, but it was reformulated by Fred Hoyle, Thomas Gold, and Hermann Bondi in 1948.
The steady-state theory was first proposed by Sir James Jeans in the 1920s, but it was reformulated by Fred Hoyle, Thomas Gold, and Hermann Bondi in 1948.
What is the pulsating theory of the universe?
Explanation:
Sir J.C. Bose proposed a theory of the ascent of sap known as the pulsation theory. The Pulsating Universe Theory says that the universe follows self-sustaining cycles such as expanding and contrasting.
Sir J.C. Bose proposed a theory of the ascent of sap known as the pulsation theory. The Pulsating Universe Theory says that the universe follows self-sustaining cycles such as expanding and contrasting.
Which one of the following is a Neutralized State ?
Explanation:
A neutral country in a particular war, is a sovereign state which refrains from joining either side of the conflict and adheres to the principle of the Law of Neutrality under International Law.
A neutral country in a particular war, is a sovereign state which refrains from joining either side of the conflict and adheres to the principle of the Law of Neutrality under International Law.
Who is the writer of the book 'Theory of Justice' ?
Explanation:
A Theory of Justice is a 1971 work of political philosophy and ethics by John Rawls, in which the author addresses the problem of distributive justice. The theory utilises an updated form of Kantian philosophy and a variant form of conventional social contract theory
A Theory of Justice is a 1971 work of political philosophy and ethics by John Rawls, in which the author addresses the problem of distributive justice. The theory utilises an updated form of Kantian philosophy and a variant form of conventional social contract theory
Where is the Head Quarter of National Disaster Response Force?
'Bandipur National Park' Is Situated In Which State Of India?
Explanation:
Bandipur National Park established in 1974 as a tiger reserve under Project Tiger, is a national park located in the Indian state of Karnataka at Chamarajnagar district, which is the state with the second highest tiger population in India. Along with adjacent Nagarhole National Park it is one of the premier Tiger Reserves in the country. source:Wikipedia
Bandipur National Park established in 1974 as a tiger reserve under Project Tiger, is a national park located in the Indian state of Karnataka at Chamarajnagar district, which is the state with the second highest tiger population in India. Along with adjacent Nagarhole National Park it is one of the premier Tiger Reserves in the country. source:Wikipedia
The First English Newspaper In India Was
Explanation:
Hickey's Bengal Gazette was an English newspaper published from Kolkata (then Calcutta), India. It was the first major newspaper in India, started in 1780. It was published for two years. Founded by James Augustus Hicky, a highly eccentric Irishman who had previously spent two years in Jail for debt
Hickey's Bengal Gazette was an English newspaper published from Kolkata (then Calcutta), India. It was the first major newspaper in India, started in 1780. It was published for two years. Founded by James Augustus Hicky, a highly eccentric Irishman who had previously spent two years in Jail for debt
Who is known as the Light of Asia?
Related Study Material
General Awareness Quiz on Physical Geography
This quiz comprises questions related to Universe based on competitive exams pattern with explanations.