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Origin Of Life Ch 3
Test Description: Marine Biology
Instructions: Answer all questions to get your test result.
1) The Big Bang Theory is
A
The theoretical beginning of the universe from a single point
B
the formation of the moon from a volcanic explosion
C
the formation of the earth from a supernova
2) A protostar is
A
the beginning of a star caused by gases accumulating and condensing into a dense core
B
a star that explodes into multiple protobodies
C
an expanding cloud of water vapor
3) Scientists theorize that stars formed
A
when protostars became so dense that nuclear fusion began in their core
B
because matter in the energy in the expanding universe is evenly distributed
C
as a result of comets striking protostars
4) Scientists therorize that heavy elements formed
A
when the universe collapsed
B
when the Big Bang hurled atoms into eachother
C
when light atoms within the stars fused, becoming heavier atoms
5) In a star's theorized life cycle, a supernova occurs when
A
the star consumes all the hydrogen fueling it
B
the star accretes from condensing gases
C
the star condenses and begins to expand
6) It is theorized that the solar system
A
was formed when stray planets spontaneously began to orbit the sun
B
resulted when a supernova shock wave caused a nebula to condense and spin
C
was formed from matter left by a passing comet
7) The planets were formed, according to theory
A
when some condensing gas revolving around the sun collapsed into masses too small to become stars
B
when a passing comet left a trail of material
C
when passing asteroids were captured by the sun's gravity and accreted into planets
8) The nebular theory is that
A
the solar system will expand into a nebula
B
Earth is a nebula
C
the solar system formed from a nebula
9) According to nebular theory, Earth and other planets formed due to a process called
A
desnisty stratification
B
accretion
C
transplantation
10) The process by which matter became layered according to density during Earth's formation, with heavier matter near the core and lighter material near the crust is called
A
transplantation
B
accretion
C
density stratification
*select an answer for all questions
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