Vocabulary 2 Question Preview (ID: 59370)
8th Grade Vocabulary.
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Law of Superposition
a) The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it
b) Unreactive gases found in group 18
c) Destructive. When two plates move towards one another.
d) Number of protons and neutrons
Fault
a) A break in the earth's crust, found near tectonic plates
b) the process by which water on the ground surface enters the soil
c) A state of matter that has no definite shape but has a definite volume.
d) Genetically modified organism made when DNA is removed from one organism and placed within the DNA of what can be a very diff
Extinction
a) Describes a species that no longer has any known living individuals.
b) organisms that get energy by consuming other organisms (consumers)
c) Pollution that comes from a single identifiable site.
d) a type of rock that forms from the cooling of molten rock at or below the surface
Fossil Record
a) All known information about fossils collected about fossils
b) A mixture consisting of tiny particles that are intermediate in size. Is often cloudy. Example: Milk
c) Describes a species that no longer has any known living individuals.
d) Matter is not created nor destroyed in any chemical or physical change
Absolute Age
a) The age of a rock given as the number of years since the rock formed.
b) solid to gas
c) pH less than 7
d) the amount of minerals in water, usually referring to the amount of calcium and magnesium
Relative Age
a) The age of a rock compared to the ages of rock layers. Example: Rock Layer B is older than Rock Layer A.
b) A relationship between two organisms of different species where one benefits and the other is harmed
c) Number of protons and neutrons
d) A relationship between two organisms in which one organism benefits and the other is unaffected
gravity
a) the force that pulls all objects with mass toward one another
b) thin part of Earth's crust, made of basalt, more dense than continental crust
c) the part of the Earth facing away from the sun in a rotation
d) marks the beginning of winter, December 21
seafloor spreading
a) process that occurs where two plates move apart creating a mid-ocean ridge
b) type of boundary where two plates separate creating a mid-ocean ridge and new crust
c) broken sections of Earth's crust that drift slowly on the mantle
d) an increasing amount of visible light on the moon's surface, light on the right
Analogous structures
a) Organisms that do not share a common ancestor yet have similar functions.
b) Responsibility for conserving and restoring the Earth's resources for future generations.
c) An inherited mutation in an organism's DNA that provided an advantage for survival of a species.
d) A sudden and widespread outbreak of a disease within a specific population group or area
Aquifer
a) An underground layer of rock that contains groundwater.
b) A specific source of pollution that can be identified.
c) The average mass of the atoms of an element (protons and neutrons). Typically found at the bottom of the element square (ex:
d) A place where an old, eroded rock surface is in contact with a newer rock layer.
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