Q. Who proposed the Nebular Hypothesis to explain the origin of the solar system?
A). Isaac Newton
B). Immanuel Kant
C). Albert Einstein
D). Nicolaus Copernicus
Answer: B). Immanuel Kant
Explanation: The Nebular Hypothesis, proposed by Immanuel Kant, suggests that the solar system originated from a giant rotating cloud of gas and dust called a nebula.
Q. The age of the earth is _
A). 4.6 million years
B). 4.6 billion years
C). 460 million years
D). 46 billion years
Answer: B). 4.6 billion years
Q. Otto Schmidt and Carl Weizsacker theories are improvements of which earlier hypothesis?
A). Nebular Hypothesis
B). Binary Star Theory
C). Planetesimal Theory
D). Cigar-Shaped Solar Nebula Theory
Answer: A). Nebular Hypothesis
Q. Which one of the following has the longest duration?
A). Period
B). Era
C). Epoch
D). Eons
Answer: D). Eons
Q. Which one of the following is NOT related to the formation or modification of the present atmosphere?
A). Degassing
B). Photosynthesis
C). Differentiation
D). Solar wind
Answer: D). Solar wind
Q. The Binary Star Theory primarily explains:
A). Formation of mountains
B). Origin of the solar system
C). Evolution of Earth’s atmosphere
D). Distribution of oceans
Answer: B). Origin of the solar system
Q. Who proposed the Big Bang Theory for the origin of the universe?
A). Albert Einstein
B). Georges Lemaitre
C). Edwin Hubble
D). Isaac Newton
Answer: B). Georges Lemaitre
Q. According to the Big Bang Theory, the universe originated:
A). From a giant star explosion
B). From a single primordial atom
C). From multiple nebulae
D). From colliding galaxies
Answer: B). From a singular, extremely dense point
Explanation: Georges Lemaitre, a Belgian astronomer and physicist, proposed the Big Bang Theory, suggesting that the universe began from a single primordial atom with and unimaginably small volume and infinite density.
Q. According to the Big Bang Theory, the first atoms began to form within:
A). 1 second after the Big Bang
B). 3 minutes after the Big Bang
C). 380,000 years after the Big Bang
D). 1 billion years after the Big Bang
Answer: B). 3 minutes after the Big Bang
Q. The discovery that galaxies are moving away from each other supports which aspect of the Big Bang Theory?
A). Universe is contracting
B). Universe is static
C). Universe is expanding
D). Universe is cooling
Answer: C). Universe is expanding
Q. Who discovered that galaxies are moving away from each other?
A). Albert Einstein
B). Georges Lemaître
C). Edwin Hubble
D). Isaac Newton
Answer: C). Edwin Hubble
Q. A light-year is a unit of:
A). Time
B). Mass
C). Distance
D). Speed
Answer: C). Distance
Explanation: 1 light year= 9.461× 1012 km
Q. Which of the following statements about inner planets is incorrect?
A). Inner planets are also called terrestrial planets.
B). Inner planets lies between the sun and the asteriod belt.
C). Inner planets are located beyond the asteroid belt.
D). Inner planets include Mercury, Venus, Earth, and Mars.
Answer: C). Inner planets are located beyond the asteroid belt.
Q. Which of the following statements about outer planets is incorrect?
A). Outer planets are also called Jovian gas giants planets.
B). Outer planets are located beyond the asteroid belt.
C). Outer planets have rocky surfaces like Earth.
D). Outer planets include Jupiter, Saturn, Uranus, and Neptune.
Answer: C). Outer planets have rocky surfaces like Earth.
Q. The Moon formed approximately how many years ago:
A). 2.6 million years ago
B). 4.44 billion years ago
C). 8.60 billion years ago
D). 1 billion years ago
Answer: B). 4.44 billion years ago
Q. The primary atmosphere of Earth was mostly composed of:
A). Oxygen and nitrogen
B). Hydrogen and helium
C). Carbon dioxide and methane
D). Nitrogen and oxygen
Answer: B). Hydrogen and helium
Q. The process by which planetesimals form planets is called:
A). Fission
B). Accretion
C). Condensation
D). Fragmentation
Answer: B). Accretion
Explanation: Accretion is the process by which small solid bodies (planetesimals) collide and stick together to gradually form planets.
Q. Degassing played an important role in:
A). Formation of mountains
B). Formation of Earth’s atmosphere and oceans
C). Creation of the Moon
D). Formation of stars
Answer: B). Formation of Earth’s atmosphere and oceans
Q. What is meant by differentiation in Earth’s context?
A). Separation of Earth into layers based on density
B). Formation of oceans
C). Cooling of the Earth’s surface
D). Erosion of rocks
Answer: A). Separation of Earth into layers based on density
Q. The Earth’s oceans were formed within ___ million years from the formation of the Earth.
A). 50 million years
B). 500 million years
C). 1,000 million years
D). 4,600 million years
Answer: B). 500 million years
Q. Life on Earth appeared how many years before the present?
A). 13.7 billion years ago
B). 38 billion years ago
C). 3.8 billion years ago
D). 3.8 million years ago
Answer: C). 3.8 billion years ago