Which of the following is true regarding Earth's axis?
A) The axis remains parallel to the plane of the ecliptic.
B) The amount of axial tilt fluctuates during the year and forms the basis for seasonal changes.
C) All locations on earth receive sunlight at a 90° angle at least once a year due to the tilt.
D) The axis is tilted 23.5° from a perpendicular to the plane of the ecliptic.
E) Axial tilt is unrelated to the phenomenon of seasonal change.
D
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The type of structure shown in this figure is a
A) joint.
B) normal fault.
C) reverse fault.
D) strike-slip fault.
E) dip-slip fault.
The pupil of your eye is a net
A) absorber of radiant energy. B) emitter of radiant energy.
Volcanoes that have a time between eruptions of 1,000 years or greater always have a Volcanic
Explosivity Index of 5 or greater. Indicate whether the statement is true or false.
The reason that Earth is now closest to the Sun in January, but will be closest in July in 11,000 years,
is: a. orbital eccentricity. b. changes in axial tilt. c. precession of the equinoxes. d. gravitational attraction to the sun. e. gravitational attraction to the moon.