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. (B)</p> Signup and view all the answers

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

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

What is the diameter of the Sun in miles?

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

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

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

Who proposed the Heliocentric Model of the universe?

<p>Nicolaus Copernicus (D)</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. (A)</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 (C)</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 (B)</p> Signup and view all the answers

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

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

What concept is described by the Rigveda regarding the universe?

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

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

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

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

<p>Geocentric universe (A)</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 (B)</p> Signup and view all the answers

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

<p>Gluon (B)</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 (B)</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. (D)</p> Signup and view all the answers

Which ocean zone is defined as having no photosynthesizing organisms?

<p>Mesopelagic (B)</p> Signup and view all the answers

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

<p>Horizon O (A)</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. (A)</p> Signup and view all the answers

Which of the following correctly describes the abyssopelagic zone?

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

Which is true about the earth's land distribution?

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

What does pedology study?

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

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

<p>Sand (C)</p> Signup and view all the answers

Which soil horizon is primarily composed of weathered rock fragments?

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

What is the primary characteristic of clay soil?

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

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

<p>Climate (A)</p> Signup and view all the answers

What properties make loam an ideal soil for gardening?

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

Which horizon is known for leached minerals and organic matter?

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

Which waste disposal method involves the burning of garbage?

<p>Incineration (D)</p> Signup and view all the answers

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

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

What role do organisms play in soil formation?

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

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