CAPA CH 8 EXAM QUESTIONS WITH REVISED ANSWERS ALL CORRECT 100% GUARANTEED PASS
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CAPA CH 8 EXAM QUESTIONS WITH REVISED ANSWERS ALL CORRECT 100% GUARANTEED PASS
What law explains why cloud spins faster as it shrinks in size? - Answer- The law of conservation of angular momentum
In the same evolutionary sequence of a collapsing gas cloud shown in the previous question, what...
CAPA CH 8 EXAM QUESTIONS WITH
REVISED ANSWERS ALL CORRECT
100% GUARANTEED PASS
What law explains why cloud spins faster as it shrinks in size? - Answer- The law of
conservation of angular momentum
In the same evolutionary sequence of a collapsing gas cloud shown in the previous
question, what law explains why the center of the cloud becomes so much hotter as the
cloud shrinks in size?
A) The law of conservation of energy.
B) The law of conservation of angular momentum.
C) The universal law of gravitation.
D) Kepler's third law.
E) Newton's second law of motion. - Answer- A) The law of conservation of energy.
Which of the following best explains why we can rule out the idea that planets are
usually formed by near-collisions between stars?
A) A near collision might have created planets, but it could not have created moons,
asteroids, or comets.
B) Stellar near-collisions are far too rare to explain all the planets now known to orbit
nearby stars.
C) Studies of the trajectories of nearby stars relative to the Sun show that the Sun is not
in danger of a near-collision with any of them.
D) A near collision should have left a trail of gas extending out behind the Sun, and we
see no evidence of such a trail. - Answer- B) Stellar near-collisions are far too rare to
explain all the planets now known to orbit nearby stars.
This simulation snapshot shows an object colliding with early Earth. What is thought to
have happened as a result of such collision?
A) It blasted away debris that then accreted in Earth orbit to form the Moon.
B) The impact changed Earth's orbit from on which life would have been unlikely to our
current orbit in which life flourishes.
, C) The impact released the heat that allowed Earth to undergo differentiation.
D) It lead to the extinction of dinosaurs.
E) The current Earth would have been 10 times bigger without this impact. - Answer- A)
It blasted away debris that then accreted in Earth orbit to form the Moon
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) All the other elements were swept out of the solar system by the solar wind.
B) Hydrogen and helium are the most common elements throughout the universe,
because they were the only elements present when the universe was young.
C) Hydrogen and helium are produced in stars by nuclear fusion.
D) All the other elements escaped from the solar nebula before the Sun and planets
formed. - Answer- B) Hydrogen and helium are the most common elements throughout
the universe, because they were the only elements present when the universe was
young.
According to our present theory of solar system formation, which of the following
statements about the growth of terrestrial and jovian planets is NOT true?
A) Both types of planet begun with planetesimals growing through the process of
accretion, but only the jovian planets were able to capture hydrogen and helium gas
from the solar nebula.
B) The terrestrial planets formed inside the frost line of the solar nebula and the jovian
planets formed beyond it.
C) Swirling disks of gas, like the solar nebula in miniature, formed around the growing
jovian planets but not around the growing terrestrial planets.
D) The jovian planets began from planetesimals made only of ice, while the terrestrial
planets began from planetesimals made only of rock and metal. - Answer- D) The jovian
planets began from planetesimals made only of ice, while the terrestrial planets began
from planetesimals made only of rock and metal.
What is the primary basis upon which we divide the ingredients of the solar nebula into
four categories (hydrogen/helium; hydrogen compound; rock; metal)?
A) The locations of various materials in the solar nebula.
B) The atomic mass numbers of various materials.
C) The temperatures at which various materials will condense from gaseous form to
solid form.
D) The amounts of energy required to ionize various materials. - Answer- C) The
temperatures at which various materials will condense from gaseous form to solid form.
Many meteorites appear to have formed very early in the solar system's history. How do
these meteorites support our theory about how the terrestrial planets formed?
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