________ occur about 130 km above Earth's surface near the polar regions when energy in the solar wind guided by Earth's magnetic field excites gases in the upper atmosphere.
A) Coronas
B) Flares
C) Auroras
D) Coronal holes
E) Nuclear fission
Correct Answer:
Verified
Q12: The Sun creates its energy by the
Q13: Much of the solar wind comes from
Q14: One sees differences in _ depending on
Q15: The Sun's magnetic field is evident in
Q16: The centers of granules
A)are hot material rising
Q18: The strong force is the force that
A)binds
Q19: Astronomers can use _ to measure magnetic
Q20: Granulation is caused by
A)sunspots.
B)rising and sinking gases
Q21: Which of the following is suggested as
Q22: A _ is believed to occur when
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