Earth's Axial Tilt and Precession Quiz
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Questions and Answers

What is the motion of Earth's axis over a period of about 26,000 years called?

  • Tilt
  • Orbit
  • Eccentricity
  • Precession (correct)
  • How does a smaller axial tilt affect global climate?

  • Causes less winter snow to melt during cooler summers (correct)
  • Causes an increase in the average global temperature
  • Leads to summer occurring when Earth is closest to the sun
  • Results in the expansion of glaciers and ice sheets
  • How does precession affect the timing of the seasons on Earth?

  • Affects the direction in which Earth's axis points in space (correct)
  • Changes the distance between Earth and the sun
  • Influences the severity of winter weather
  • Alters the duration of each season
  • What happens when Earth's axis points toward Polaris, the North Star?

    <p>Summer in the Southern Hemisphere occurs when Earth is closest to the sun</p> Signup and view all the answers

    How do scientists explain the complexity of understanding the combined effects of Earth's motion in space?

    <p>By developing mathematical and computer models</p> Signup and view all the answers

    What is responsible for summer occurring in different hemispheres depending on Earth's axial tilt?

    <p>Earth's axis pointing direction</p> Signup and view all the answers

    How does Earth's orbit eccentricity affect the amount of solar energy reaching Earth?

    <p>When Earth's orbit is more circular, it receives slightly more solar energy than when it is more elliptical.</p> Signup and view all the answers

    How do changes in Earth's axial tilt affect the differences between seasons?

    <p>Increased tilt leads to greater differences between seasons.</p> Signup and view all the answers

    Which statement accurately describes the relationship between Earth's orbital eccentricity and its distance from the sun?

    <p>When Earth's orbit is more eccentric, it spends more time farther from the sun.</p> Signup and view all the answers

    How does Earth's tilt affect the weather changes between seasons?

    <p>Greater tilt results in more significant weather changes between seasons.</p> Signup and view all the answers

    What impact does a less elliptical (more circular) orbit have on the distribution of solar energy during the year?

    <p>It results in slightly more solar energy being received during the year.</p> Signup and view all the answers

    How do changes in Earth's orbit eccentricity impact the overall temperature on Earth over tens of thousands of years?

    <p>They result in slight fluctuations in temperature over long periods.</p> Signup and view all the answers

    How do eccentricity, tilt, and the time of perihelion collectively influence the amount of energy reaching the Northern Hemisphere in July?

    <p>They cause fluctuations in the energy reaching the Northern Hemisphere</p> Signup and view all the answers

    Why does the graph of northern summer insolation not follow a perfectly regular pattern?

    <p>Eccentricity, tilt, and precession cause variations in solar energy distribution</p> Signup and view all the answers

    How does ellipticity impact the total amount of solar energy that reaches Earth?

    <p>Ellipticity causes fluctuations in solar energy reaching Earth</p> Signup and view all the answers

    What did variations in Earth's orbit determine about sunlight intensity in the far North during summer months?

    <p>Orbit variations impact sunlight intensity significantly in all seasons</p> Signup and view all the answers

    Why can weak summer sunlight over years lead to snow accumulation resulting in ice ages?

    <p>Snow accumulation from weak summer sunlight can lead to ice ages</p> Signup and view all the answers

    What do Milankovitch cycles primarily focus on?

    <p>Variations in Earth's orbit and axial tilt</p> Signup and view all the answers

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