Stars and Light Energy

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Questions and Answers

What is the main source of light in our solar system?

  • The Earth
  • The Sun (correct)
  • The Moon
  • The planets

How long does it take the Earth to make one complete rotation on its axis?

  • 365.25 days
  • 1 year
  • 24 hours (correct)
  • 27 days

What is the term used to describe objects that reflect light?

  • Emitters
  • Constellations
  • Circumpolar
  • Reflectors (correct)

Which of the following constellations are visible in the night sky all year long?

<p>Ursa Major, Ursa Minor, Cassiopeia, Cepheus, and Draco (B)</p> Signup and view all the answers

In which direction does the Sun rise and set?

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

How long does it take the Moon to both rotate on its axis and revolve around Earth?

<p>27 days (C)</p> Signup and view all the answers

Which of the following statements about the Sun is correct?

<p>The Sun is a medium-sized star and should never be viewed directly. (D)</p> Signup and view all the answers

What is the primary cause of the apparent movement of stars and constellations across the night sky?

<p>The Earth's rotation on its axis (C)</p> Signup and view all the answers

What is the approximate time it takes for the Earth to complete one full revolution around the Sun?

<p>365.25 days (C)</p> Signup and view all the answers

Which of the following is NOT a circumpolar constellation?

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

What is the cause of the seasons on Earth?

<p>The tilt of the Earth's axis (A)</p> Signup and view all the answers

What is the term used to describe objects that give off their own light?

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

How many stars are estimated to be in the observable universe?

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

What is the primary source of light in our solar system?

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

Which of the following is NOT a movement of the Earth?

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

What is the approximate time it takes for the Moon to both rotate on its axis and revolve around Earth?

<p>27 days (B)</p> Signup and view all the answers

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