At all times during the year, the circle of illumination
A) divides Earth between day and night.
B) divides Earth between equal halves of lightness and darkness.
C) separates spring from autumn.
D) divides Earth into eastern and western halves.
E) separates winter from summer.
Answer: B) divides Earth between equal halves of lightness and darkness.
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Which of the following explains why clouds appear white when the sun is shining?
A. They contain white pigments. B. They refract white light. C. Light of all colours is scattered many times within the clouds. D. They cannot absorb the specific frequency of white light.
Which of the following is NOT located in Australia?
A) the Macdonnell Range B) the Kimberly Plateau C) the Western Plateau D) the Great Dividing Range E) the Southern Alps
We know the age of the lunar highlands from ________
A) age estimates from cratering rates B) dating of lunar rocks collected by Apollo missions C) dating of lunar maria basalts collected by Apollo astronauts, and extrapolated back in time by relative chronology D) dating of earth rocks, and correlating to lunar events
Which of the following best explains why there is a difference between a lunar day and a solar day?
A) During one Earth rotation, the Moon has continued orbiting Earth. B) The Moon must rotate an additional 50 minutes to catch up to Earth. C) The solar day and lunar day are measured from different meridians. D) The Sun has a stronger pull on the larger Earth versus the smaller Moon. E) The tide-generating forces of the Sun and Moon are working at right angles.