Multiple Choice
An aurora (shown below) is produced when ____________. 
A) solar wind particles are directed toward the poles and excite atmospheric gases
B) swamp gases rise upward from the arctic tundra
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
Q16: The metal alloy that makes up the
Q17: The Big Bang theory states that _.<br>A)all
Q23: The Hubble Telescope took this photo in
Q25: The inner planets are terrestrial because _.<br>A)
Q25: The lithosphere lies directly above the<br>A) transition
Q28: The densest layer of Earth is the
Q31: The geocentric model (shown below)was developed during
Q40: As compared to the rocks that make
Q45: During a journey to the center of
Q50: Presently,Earth's atmosphere is dominated by which two