1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Archy [21]
3 years ago
11

Why doesn’t the sun blow itself up?

Geography
1 answer:
statuscvo [17]3 years ago
5 0

An explosion occurs when the timescale for the energy release by some process is much shorter than the timescale on which a system can adjust to damp the energy release process. In the present day Sun, nuclear fusion is a very slow process: on average it takes many billion years for a proton to fuse with another. This timescale is quite temperature dependent, so you might have thought the centre of the Sun might heat up quickly, leading to a runaway "explosion". However, an increase in temperature leads to an increase in pressure that would expand the Sun, reducing the core density and temperature and decreasing the rate of nuclear fusion again. The timescale for the Sun to react in this way is just millions of years, so this acts like a thermostat that keeps the reactions under control.

You might be interested in
From the standpoint of geography, your mental map is your:
Sedaia [141]

Answer:

From the standpoint of geography, your mental map is your visualization of the spaces you come across.

Explanation:

In the sphere of behavioural geography, the phrase "mental map" stands for a person's viewpoint or perception of his/her area of interaction. Though it might seem like a subject matter that would be studied by social sciences fields, it is mostly studied by modern-day geographers. Mental maps are important as they provide people with crucial means of making sense of the world. They also help in storing and recalling information about the patterns of the Earth's physical and human characteristics. Example: Picturing one's neighbourhood, one can visualize where the roads go and where the houses are located including landmarks.

4 0
3 years ago
Auckland grew up around a harbor site. with reference to what other feature could the site of auckland be described?
Rzqust [24]
The city of Auckland is also known for having the largest Polynesian population in the world of any city. The Maori people that are native to New Zealand make up 10.7% of the city's population (2013 census). They have all rights and have no problems with the other communities, and are one of the rare that haven't been assimilated or discriminated after the European colonization, which brought a nice collaboration in forming the state and mutual support and welfare.  <span />
4 0
3 years ago
Select all that apply. From your understanding, what is true about population growth?
tamaranim1 [39]

Answer:

correct answer is b

Explanation:

.......m

ok

8 0
3 years ago
About _____ of the population of the US and Canada lives in urban areas. A. 80% B. 60% C. 40% D. 20%
goblinko [34]

Answer:

A

Explanation:

4 0
3 years ago
A star begins as a ____, a large cloud of gas and dust . A) nebula B) giant. C) dwarf. D) black hole
julsineya [31]
A star begins as a nebula, a large cloud of gas and dust.

So the answer is A.

4 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following is an example of evaporative cooling? Select one: a. standing in a breeze after getting out a pool in sum
    15·1 answer
  • Why are the N, S, E, and W designations often omitted from coordinates on U.S. topographic maps?
    15·1 answer
  • Which type of plate boundary led to the creation of the Himalayan Mountains, the highest in the world, near India?
    10·1 answer
  • Which situation is the best example of interti
    6·1 answer
  • Why is the law of gravity referred to as the universal law of gravity​
    9·1 answer
  • What was the primary goal of U.S. foreign policy after 1946?
    7·1 answer
  • Which of the following climate types is associated with the midlatitude broadleaf and mixed forest biome?
    8·1 answer
  • What caused Earth to develop layers as it cooled?
    7·1 answer
  • Calculate the amount, in grams, of an original 300-gram sample of radioactive isotope Potassium-40 remaining after
    6·1 answer
  • The most abundant non-metal found in the Earth's crust is​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!