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Flashcards - Understanding Earth's Formation & Development

Flashcards - Understanding Earth's Formation & Development
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air
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity
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Milky Way
The Milky Way is the galaxy that contains our Solar System
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mass extinction
An extinction event is a widespread and rapid decrease in the biodiversity on Earth
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eras
An era is a span of time marked by character, events, changes on earth, etc
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photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities
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mantle
The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies
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crust
In geology, the crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle
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crust
In geology, the crust is the outermost solid shell of a rocky planet or natural satellite, which is chemically distinct from the underlying mantle
mantle
The mantle is a layer inside a terrestrial planet and some other rocky planetary bodies
photosynthesis
Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms' activities
eras
An era is a span of time marked by character, events, changes on earth, etc
mass extinction
An extinction event is a widespread and rapid decrease in the biodiversity on Earth
Milky Way
The Milky Way is the galaxy that contains our Solar System
air
The atmosphere of Earth is the layer of gases, commonly known as air, that surrounds the planet Earth and is retained by Earth's gravity
epoch
In the fields of chronology and periodization, an epoch is an instant in time chosen as the origin of a particular era
Charles Lyell
Sir Charles Lyell, 1st Baronet, FRS was a British lawyer and the foremost geologist of his day
gradualism
Gradualism, from Latin gradus , is a hypothesis, a theory or a tenet assuming that change comes about gradually or that variation is gradual in nature
radioactive dating
Radiometric dating or radioactive dating is a technique used to date materials such as rocks or carbon, in which trace radioactive impurities were selectively incorporated when they were formed
numerical dating
Absolute dating is the process of determining an age on a specified chronology in archaeology and geology
relative dating
Relative dating is the science of determining the relative order of past events , without necessarily determining their absolute age,
ozone layer
The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation

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