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</p> Signup and view all the answers

    How old is the universe?

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

    What happened to many life forms in the past?

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

    What is the main idea challenged during the nineteenth century?

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

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

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

    What is the main idea challenged during the nineteenth century?

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

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

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

    What is the mechanism of evolution proposed by Darwin called?

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

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

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

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