Is the Earth Special?

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Questions and Answers

What is the main difference between the inner planets and the outer planets?

  • The inner planets are bigger than the outer planets.
  • The inner planets have more moons than the outer planets.
  • The outer planets have a solid surface while the inner planets have a gaseous surface.
  • The outer planets are colder and larger than the inner planets. (correct)

What is the function of the trachea in the respiratory system?

  • Sound production
  • Gas exchange
  • Protection of the thorax
  • Conducting air into and out of the lungs (correct)

Why does a lunar eclipse occur?

  • When the moon changes its shape
  • When there is a shadow cast by a planet
  • When Earth comes between the moon and sun (correct)
  • When the sun comes between Earth and the moon

What is the function of alveoli in the respiratory system?

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

How many moons does Saturn have according to the text?

<p>60 (A)</p> Signup and view all the answers

What causes day and night on Earth?

<p>The rotation of Earth on its axis (B)</p> Signup and view all the answers

Why is it hotter in summer than in winter on Earth?

<p>The Earth's axis is tilted, causing the Sun's rays to be more concentrated in summer (C)</p> Signup and view all the answers

Why do seasons change on Earth?

<p>The tilt of Earth's axis as it orbits the Sun (D)</p> Signup and view all the answers

What type of planets are Mercury, Venus, Earth, and Mars considered to be?

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

Why does no one see all of the solar system at once?

<p>Because the solar system is too big to observe all at once (A)</p> Signup and view all the answers

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