Northern Hemisphere winters are colder than Northern Hemisphere summers because

Northern Hemisphere winters are colder than Northern Hemisphere summers because
 
  a. Earth is closer to the sun during the summer than it is during the winter.
  b. the snow that falls in the northern latitudes cools Earth during the winter.
  c. the light from the sun shines more directly on the Northern Hemisphere during the summer.
  d. the period of sunlight is longer during the summer than during the winter.
  e. c and d

Question 2

The sun moves
 
  a. about one degree westward each day.
  b. about one degree eastward each day.
  c. about 360 degrees westward each day.
  d. about 360 degrees eastward each day.
  e. along the celestial equator.

Question 3

The _____________ is 18 years and 11 1/3 days long.
 
  a. sidereal period
  b. synodic period
  c. eclipse season
  d. saros cycle
  e. eclipse year

Question 4

If the Earth's period of rotation doubled, but the period of revolution stayed the same
 
  a. the night would be twice as long.
  b. the night would be half as long.
  c. the year would be half as long.
  d. the year would be twice as long.
  e. the length of the day would be unchanged

Question 5

If the Earth's period of rotation doubled, but the period of revolution stayed the same
 
  a. the night would be twice as long.
  b. the night would be half as long.
  c. the year would be half as long.
  d. the year would be twice as long.
  e. the length of the day would be unchanged