Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
New Topic  
staedtler staedtler
wrote...
Posts: 2716
Rep: 0 0
7 years ago
What causes the phenomenon of the aurora?
A)   Solar ultraviolet light excites ozone molecules in the ozone layer.
B)   Charged particles from the magnetosphere strike atoms in the upper atmosphere, causing them to emit characteristic colors of light.
C)   Light from solar flares reflects from high-altitude clouds in the Earth's atmosphere.
D)   Charged particles emit light as they spiral along magnetic field lines in the magnetosphere.
Textbook 
Discovering the Universe

Discovering the Universe


Edition: 7th
Authors:
Read 70 times
2 Replies
Replies
Answer verified by a subject expert
hyponoticahyponotica
wrote...
Top Poster
Posts: 1396
7 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

staedtler Author
wrote...
6 years ago
I really appreciate your help!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1227 People Browsing
 124 Signed Up Today
Related Images
  
 4428
  
 543
  
 257
Your Opinion
How often do you eat-out per week?
Votes: 79

Previous poll results: Do you believe in global warming?