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WorksheetsTheories of the Origins of Life Review
Total questions: 15
Worksheet time: 8mins
The Big Bang is
the theorized beginning of the universe from a single point
the formation of earth from a supernova
the formation of the moon from a volcanic explosion
a protostar is
a star that explodes into multiple protobodies
the theorized beginning of a star caused by gasses accumulating and condensing into a dese core
an expanding cloud of water vapor
It's theorized that the solar system
was formed when stray planets spontaneously began to orbit the sun
resulted when a supernova shock wave caused a nebula to condense and spin
was formed by matter left by a passing comet
The nebular theory is the theory that
the solar system formed from a nebula
earth is a nebula
the solar system will expand into a nebula
The process by which matter became layered according to density during earth's formation, with heavier matter near the core and lighter material closer to the crust, is called
transplantation
density stratification
accretion
The more accepted theory of the moon's origin is
that a planet-sized object struck young earth, sending material into orbit that eventually became the moon.
that the moon was a planet flung from another galaxy by a supernova that happened to fall into earth's orbit
that the moon is a passing asteroid captured by earths gravity
Select all the options that are reasonable explanations for how life began on earth
life began in the ocean
life began in outer space and was transported to earth from meteors
life began on land
life began in deep sea vents
A(n) __________ is an organism that relies on consuming chemical compounds. A(n)_______________ is an organism that can create organic chemical compounds from inorganic compounds and an external energy source.
heterotroph, mitochondria
autotroph, mitochondria
heterotroph, autotroph
autotroph, heterotroph
Earth's primordial atmosphere most likely included:
carbon dioxide, water vapor, sulfur dioxide, and methane.
hydrogen, helium, and oxygen.
nitrogen, ozone, and sulfur dioxide.
all of the above.
Oxygen is important to life because it allows organisms to use chemical energy more efficiently
True
False
Eukaryotic cells evolved around
200 billion years ago.
20 billion years ago.
1.5 billion years ago.
15 million years ago.
How long ago did the Big Bang occur?
13.7 million years ago
13.7 billion years ago
4.6 million years ago
4.6 billion years ago
Earth developed the first ocean by about 4 million years ago.
True
False
Production of the first free oxygen in the atmosphere caused organisms living at the time to flourish.
True
False
Salts in the ocean are derived from the following sources except:
chemical weathering.
erosion of the continents.
the formation of sea shells from mollusks.
volcanic activity.
