Astronomy Fundamentals Quiz
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Questions and Answers

What year was the Pluto reclassified as a dwarf planet?

  • 1930
  • 1995
  • 2006 (correct)
  • 1986

    • What theory proposes that the universe expands but does not change its density?

  • Geocentric Model
  • Steady State Theory (correct)
  • Nucleosynthesis Era
  • Heliocentric Model

    • Which of the following is NOT one of the IAU criteria for classifying a celestial body as a planet?

  • It has a solid surface (correct)
  • It must be in orbit around the sun
  • It has sufficient mass to assume hydrostatic equilibrium
  • It must have the ability to clear the neighborhood around its orbit

    • Which of the following is true about terrestrial planets?

    <p>They have a solid surface and are Earth-like.</p> Signup and view all the answers

    Which era is marked by the formation of protons, electrons, and neutrons?

    <p>Hadron &amp; Lepton Era</p> Signup and view all the answers

    What is the diameter of the Sun in miles?

    <p>864,000 miles</p> Signup and view all the answers

    Which model places the Earth at the center of the universe?

    <p>Geocentric Model</p> Signup and view all the answers

    Who proposed the Heliocentric Model of the universe?

    <p>Nicolaus Copernicus</p> Signup and view all the answers

    According to the Encounter Hypothesis, what process leads to the formation of planets?

    <p>A rogue sun passing the sun and stripping material from it.</p> Signup and view all the answers

    What describes a repeated cycle of the universe beginning with a Big Bang and ending with a Big Crunch?

    <p>Oscillating Theory</p> Signup and view all the answers

    What model describes the universe as originating from an infinitely tiny and dense point?

    <p>The Big Bang Theory</p> Signup and view all the answers

    Which scientist is known for demonstrating that the universe is expanding?

    <p>Edwin Hubble</p> Signup and view all the answers

    What concept is described by the Rigveda regarding the universe?

    <p>Oscillating 'cosmic egg'</p> Signup and view all the answers

    Which fundamental force is responsible for binding sub-atomic particles together?

    <p>Strong nuclear force</p> Signup and view all the answers

    What did Aristotle and Ptolemy propose about the structure of the universe?

    <p>Geocentric universe</p> Signup and view all the answers

    What was the significant contribution of George Lemaitre in 1927 regarding the universe?

    <p>Introduced the idea of an expanding universe</p> Signup and view all the answers

    Which particle is considered the messenger particle in interactions between quarks?

    <p>Gluon</p> Signup and view all the answers

    Which of the following best describes the contributions of Leucippus and Democritus?

    <p>Outlined the concept of an atomic universe</p> Signup and view all the answers

    What distinguishes an artesian well from other types of wells?

    <p>It does not require a pump to bring water to the surface.</p> Signup and view all the answers

    Which ocean zone is defined as having no photosynthesizing organisms?

    <p>Mesopelagic</p> Signup and view all the answers

    Which horizon in soil formation is primarily composed of organic matter?

    <p>Horizon O</p> Signup and view all the answers

    What is the primary characteristic of horizon R in soil layers?

    <p>It consists of hard consolidated rock.</p> Signup and view all the answers

    Which of the following correctly describes the abyssopelagic zone?

    <p>It extends from 4000 to 6000 meters.</p> Signup and view all the answers

    Which is true about the earth's land distribution?

    <p>38% is used for agriculture.</p> Signup and view all the answers

    What does pedology study?

    <p>Soil and its sources.</p> Signup and view all the answers

    Which of the following best describes the trench or hadal zone?

    <p>It comprises the deepest parts of the ocean.</p> Signup and view all the answers

    Which type of soil drains well but does not retain water or nutrients?

    <p>Sand</p> Signup and view all the answers

    Which soil horizon is primarily composed of weathered rock fragments?

    <p>Horizon C</p> Signup and view all the answers

    What is the primary characteristic of clay soil?

    <p>It is the smallest particle size</p> Signup and view all the answers

    Which factor among the following affects the rate of soil formation the most?

    <p>Climate</p> Signup and view all the answers

    What properties make loam an ideal soil for gardening?

    <p>High drainage capacity and fertility</p> Signup and view all the answers

    Which horizon is known for leached minerals and organic matter?

    <p>Horizon E</p> Signup and view all the answers

    Which waste disposal method involves the burning of garbage?

    <p>Incineration</p> Signup and view all the answers

    Which of the following describes the effect of time on soil?

    <p>Soil properties improve with age</p> Signup and view all the answers

    What role do organisms play in soil formation?

    <p>They break down organic matter</p> Signup and view all the answers

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