Multiple Choice
An aurora (shown below) is produced when ________. 
A) solar wind particles are directed toward the magnetic poles and excite atmospheric gases
B) swamp gases rise from the arctic tundra and react with the upper atmosphere
C) radiation in the Van Allen belts can be seen on a clear,cold night
D) lightning travels from cloud to cloud rather than cloud to ground
Correct Answer:
Verified
Correct Answer:
Verified
Q2: Most continental topography lies within a range
Q3: The atmosphere is divided into several distinct
Q4: Compared to oceanic crust,continental crust is _.<br>A)thicker<br>B)thinner<br>C)about
Q5: When you are warmed by the Sun,you
Q8: The boundary between the crust and the
Q9: The shape of Earth's magnetic field is
Q11: The image below shows _,where a hot
Q21: Which of the following is NOT true
Q42: If you were measuring the elevation of
Q46: A mixture of copper and tin would