Stellar Distances and the Concept of Light Years

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Questions and Answers

Why do we see stars in the night sky as they were in the past?

  • The light emitted by stars takes millions of years to reach our eyes (correct)
  • The light emitted by stars takes only a few seconds to reach our eyes
  • Stars emit light that travels faster than the speed of light
  • Stars emit light that travels at a slower speed than other objects

What is the unit used to measure stellar distances according to the text?

  • Miles
  • Kilometers
  • Parsecs
  • Light years (correct)

Why do we see objects in our immediate surroundings instantly?

  • The light emitted by nearby objects takes millions of years to reach our eyes
  • Nearby objects emit light that travels faster than the speed of light
  • Nearby objects emit light that travels at the speed of light
  • The light emitted by nearby objects reaches our eyes almost instantly (correct)

What is considered a unique event in the history of the universe according to the text?

<p>The origin of life (B)</p> Signup and view all the answers

How old is the universe?

<p>Almost 20 billion years (D)</p> Signup and view all the answers

What are the three connotations of the theory of special creation?

<p>All living organisms were created as they are today, the diversity has always been the same, and the Earth is 4000 years old (B)</p> Signup and view all the answers

What did Charles Darwin conclude based on his observations during the sea voyage?

<p>Existing living forms share similarities with life forms that existed millions of years ago (D)</p> Signup and view all the answers

What happened to many life forms in the past?

<p>They became extinct (A)</p> Signup and view all the answers

What is the main idea challenged during the nineteenth century?

<p>The theory of special creation (D)</p> Signup and view all the answers

What has been happening to life forms on Earth over time?

<p>There has been gradual evolution (B)</p> Signup and view all the answers

According to conventional religious literature, what are the three connotations of the theory of special creation?

<p>All living organisms were created as they are today, the diversity has always been the same, and the earth is about 4000 years old (B)</p> Signup and view all the answers

What did Charles Darwin conclude based on his observations during the sea voyage on H.M.S. Beagle?

<p>Existing living forms share similarities with both current and extinct life forms, indicating gradual evolution (C)</p> Signup and view all the answers

What happened to many life forms in the past?

<p>Many life forms went extinct while new forms of life arose at different periods of Earth's history (B)</p> Signup and view all the answers

What did the observations made during the sea voyage challenge?

<p>The idea that the diversity of life has always been the same (D)</p> Signup and view all the answers

What is the main idea challenged during the nineteenth century?

<p>The theory of special creation (C)</p> Signup and view all the answers

According to Darwin, what is the ultimate factor determining fitness in an environment?

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

What is the mechanism of evolution proposed by Darwin called?

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

Who else came to similar conclusions as Darwin around the same time?

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

What is the term used to describe the built-in variation in characteristics within a population?

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

What determines which characteristics of a population are more likely to survive in natural conditions?

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

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