The Roche lobe of a star in a binary star system: A) resembles ...

[Jkov05]

The Roche lobe of a star in a binary star system:
 
  A) resembles the ear of Edouard Roche, a French mathematician.
  B) is, in terms of the star's gravity, its zone of influence.
  C) is the part of a rapidly rotating star that will eventually spin away to form planets.
  D) is the accretion disk around the companion star.
  E) leads to formation of rings, like around the jovian planets.

Question 2

In noting that our world is differentiated, we mean that
 
  A) the density of its materials decreases as you go downward toward the core.
  B) the Earth has evolved in a different pattern than any other planet.
  C) the iron and nickel core is denser than the silicate mantle and crust.
  D) radioactive heating in the core is at a slower pace than when the Earth was new.
  E) the Earth's magnetic field is different now in polarity than it was 700,000 years ago.

[nathang24]

Answer to Question 1

B

Answer to Question 2

C

[Jkov05]

Excellent

[TheNamesImani]

TYSM