Axial Tilt Astronomy Quiz

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Questions and Answers

What is axial tilt in astronomy?

  • The angle between the orbital plane and the line through the North and South Poles
  • The angle between an object's rotational axis and its orbital axis (correct)
  • The angle between the rotational axis and the equatorial plane
  • The angle between the equatorial plane and the orbital plane

What happens when an object has an obliquity of 0 degrees?

  • The two axes point in the same direction (correct)
  • The object's orbit becomes perfectly circular
  • The equatorial plane aligns with the orbital plane
  • The rotational axis is perpendicular to the orbital plane

How does Earth's axial tilt relate to its rotational and orbital axes?

  • The rotational axis passes through the North and South Poles, while the orbital axis is perpendicular to the plane of Earth's orbit (correct)
  • The rotational axis aligns with the orbital plane, causing day and night
  • The equatorial plane aligns with the orbital plane, causing the four seasons
  • The axial tilt causes the Earth to wobble on its axis

What effect does a stable obliquity have on an object over its orbital period?

<p>The orientation of the axis remains the same relative to the background of stars (A)</p>
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What does axial tilt cause one pole of an object to do?

<p>Point more toward the Sun (D)</p>
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