This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: According to our modern science, which of the following best explains why the vast majority of the ... (Read 183 times)

Charlie

  • Hero Member
  • *****
  • Posts: 640
on: Jul 27, 2018
According to our modern science, which of the following best explains why the vast majority of the mass of our solar system consists of hydrogen and helium gas?
 
  A) Hydrogen and helium are the most common elements throughout the universe, because they were the only elements present when the universe was young.
  B) Hydrogen and helium are produced in stars by nuclear fusion.
  C) All the other elements escaped from the solar nebula before the Sun and planets formed.
  D) All the other elements were swept out of the solar system by the solar wind.

Question 2

A planet's density can be measured by combining
 
  A) Doppler and astrometric observations.
  B) Doppler and transit observations.
  C) spectral observations of the planet's atmosphere.
  D) any method that measures the gravitational tug of the planet on the star.
  E) direct imaging from the new generation of space telescopes.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gstein359

  • Sr. Member
  • ****
  • Posts: 293
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


Charlie

  • Member
  • Posts: 640
Reply 2 on: Jul 27, 2018
Excellent

carlsona147

  • Member
  • Posts: 341
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The human body produces and destroys 15 million blood cells every second.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

There are more bacteria in your mouth than there are people in the world.

DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c DNA analysis of phylogenetic relationships among modern and extinct flightless birds by Cooper and c
Ears and grains of modern corn and its ancestor, teosinte Ears and grains of modern corn and its ancestor, teosinte
East Africa-Arabia: An Example of Modern Rifting East Africa-Arabia: An Example of Modern Rifting
(a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D (a) Initial mtDNA results suggested modern humans and Neadertals were equally distantly related to D
Despite the globe’s vast social change, people all over the world continue to make race a ... Despite the globe’s vast social change, people all over the world continue to make race a ...
Fields of Environmental Science Fields of Environmental Science
Video: DNA Replication Factory and Protein

For a complete list of videos, visit our video library