Top Posters
Since Sunday
6
w
4
c
4
r
4
m
3
m
3
u
3
m
3
e
3
k
3
N
3
y
3
Home Q & A Board Science-Related Homework Help Physics Astronomy
New Topic  
adreamer adreamer
wrote...
Go to Answer
Posts: 891
Rep: 0 0
7 years ago
Why does the Sun brighten with time?
A) as time progresses, helium starts to fuse in the core, in addition to hydrogen, leading to an increase in brightness
B) as hydrogen is converted into helium in the core, the number of hydrogen nuclei decreases, decreasing the fusion rate. To maintain the balance with gravity pressing inward, the core compensates by shrinking and heating up
C) as time progresses, more and more heat is trapped inside the core, leading to an increase in brightness
D) as hydrogen is converted into helium in the core, the number of hydrogen nuclei decreases, decreasing the fusion rate. To maintain the balance with gravity pressing inward, the core compensates by expanding and cooling
Textbook 
Life in the Universe

Life in the Universe


Edition: 4th
Authors:
Read 63 times
1 Reply
Replies
Answer verified by a subject expert
DonskoyDonskoy
wrote...
#1
Top Poster
Posts: 582
Rep: 11 0
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

adreamer Author
wrote...

7 years ago
Correct Slight Smile TY
shelbycox
wrote...

Yesterday
This calls for a celebration Person Raising Both Hands in Celebration
Kstan109
wrote...

2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  561 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 1127
  
 271
  
 583
Your Opinion
Which country would you like to visit for its food?
Votes: 263
Previous poll results: Which 'study break' activity do you find most distracting?