× Didn't find what you were looking for? Ask a question
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  
potato55 potato55
wrote...
Posts: 675
Rep: 0 0
6 years ago
We know from the Apollo missions and unmanned probes that the moon's surface is covered with loose, unconsolidated material with a texture similar to soil on earth. How did this material form on the moon?
 
  A) The material is mostly volcanic ash ejected from volcanos that are no longer active.
  B) The loose material is mostly micrometeorite fragments and ejecta from impact craters, so is very different from soil on Earth.
  C) The material is produced by spalling from rock surfaces caused by the extreme heat-cold cycles as the moon rotates through a 1 lunar day, or approximately one Earth month.
  D) The same as Earth, but soils are ancient from a time when the moon still had an atmosphere and water.
Read 65 times
1 Reply
Replies
Answer verified by a subject expert
leg17leg17
wrote...
Top Poster
Posts: 628
Rep: 5 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

potato55 Author
wrote...

6 years ago
Thanks for your help!!
wrote...

Yesterday
Thanks
wrote...

2 hours ago
Good timing, thanks!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1260 People Browsing
 126 Signed Up Today
Related Images
  
 187
  
 1616
  
 611
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741