Earth's Movement 8.7A

Students in a science class in Marfa, Texas, made a poster with a diagram to represent a seasonal change in the Northern Hemisphere. Which statement best describes conditions for Earth at Position 1 in the diagram?  

• There are an equal number of hours of daylight and nighttime in the Northern Hemisphere, and the North Pole is tilted away from the sun.
  
• The Northern Hemisphere has the fewest hours of daylight, and Earth’s axis does not tilt at this position.
• There are an equal number of hours of daylight and nighttime in the Northern Hemisphere because Earth’s axis is not tilted in this position.
  
• The Northern Hemisphere has the fewest hours of daylight, and the North Pole is tilted away from the sun.
  

Which of these changes would likely occur if the rate of Earth’s rotation on its axis increased?

• The length of the seasons would be shorter.
  
• The length of the seasons would be longer.
  
• The length of a day would be shorter.
  
• The length of a day would be longer.
  

Which of these locations on Earth experiences the least change in the number of daylight hours throughout the year?

• Equator
  
• North Pole
  
• Tropic of Cancer
  
• Tropic of Capricorn
  

The model shows Earth in several positions relative to the sun. In which position is it winter in North America?

• Position 1, because North America receives the most direct sun.
  
• Position 2, because North America is tilted toward the sun.
  
• Position 3, because North America is parallel to the sun.
  
• Position 4, because North America is tilted away from the sun.
  

Earth would not have seasons if it —

• no longer tilted on its axis.
  
• stopped rotating on its axis.
  
• took an additional month to orbit the sun.
  
• revolved around the sun in the opposite direction.