Which theory explains the origin of the universe?
- Geocentric Model
- Heliocentricity
- Big Bang Theory
- Pulsating Theory
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The Big Bang was 13.8 billion years ago when the universe began as a tiny, dense, fireball that exploded.
Who proposed the steady-state theory?
- Hermann Bondi
- Thomas Gold
- Sir James Jeans
- Fred Hoyle
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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.
Which of the following activities is also referred to as the 'Gold Collar' profession?
- Primary
- Secondary
- Quinary
- Quaternary
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Quinary activities are services that focus on the creation, re-arrangement, and interpretation of new and existing ideas; data interpretation, and the use and evaluation of new technologies. Gold Collar Worker: Refers to highly-skilled knowledgeable people such as doctors, lawyers, scientists, and also young, low-wage workers who also get parental support.
Why does a star produce its own light and heat?
- Nuclear fission
- Nuclear fusion
- Chemical reaction
- None
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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.
Big bang theory was proposed by
- Georges Lemaitre
- Hermann Bondi
- Thomas Gold
- Hoyle
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Georges Lemaitre was a Belgian cosmologist, Catholic priest, and father of the Big Bang theory.
