Vocabulary Question Preview (ID: 59368)


8th Grade Vocabulary. TEACHERS: click here for quick copy question ID numbers.

galaxy
a) celestial body of billions of stars
b) the ring around the nucleus where electrons can be found
c) marks the beginning of winter, December 21
d) process in Earth's mantle that is driving the movement of the plates

divergent boundary
a) an intense storm with low pressure, high winds, and forms over warm ocean waters
b) a human-made underwater structure built to promote marine life
c) type of boundary where two plates divide creating a mid-ocean ridge and new crust
d) all the continents on Earth used to be joined as one giant landmass known as Pangaea and have slowly drifted apart

subduction
a) the process that occurs when one plate sinks below another plate creating a trench and volcanoes
b) the hemisphere is tilted toward the Sun receiving direct sunlight
c) a human-made underwater structure built to promote marine life
d) fully visible; 100% illuminated

convection currents
a) process in Earth's mantle that is driving the movement of the plates
b) marks the beginning of winter, December 21
c) type of pressure that brings clouds and precipitation
d) type of boundary where two plates separate creating a mid-ocean ridge and new crust

convergent boundary
a) type of boundary where two plates collide creating mountains and/or volanoes
b) the spiral shaped galaxy in which we live
c) an organism that can make its own food through photosynthesis
d) an organism that gains energy by feeding on other organisms

transform boundary
a) type of boundary where two plate slide past one another creating a fault line
b) all space and the matter it contains
c) an organism that can make its own food through photosynthesis
d) theory that says the universe began as a small point that rapidly expanded

continental crust
a) thick part of Earth's crust, made of granite, less dense than oceanic crust
b) the variety of all living organisms in an ecosystem
c) a subatomic particle that contributes to the mass of an atom but has no charge
d) the motion of an object around a point, to orbit

Genetic Variation
a) Differences among individuals in the composition of their genes or other DNA segments
b) an opening in the sea floor out of which heated mineral-rich water flows.
c) A solution that contains less than the maximum amount of dissolved solute in a concentration.
d) organisms that get energy by consuming other organisms (consumers)

Trilobite
a) Commonly used as an index fossil
b) can lead to diabetes and heart disease
c) A change in matter that produces one or more new substances
d) Very reactive, likes to combine to form salts with the 1st and 2nd groups. Group 17.

Sedimentary Rock
a) A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented toget
b) Portion of the shoreline that lies between the high and low tide lines
c) an element that has properties of both metals and nonmetals
d) A segment of DNA on a chromosome that codes for a specific trait

Evolution
a) Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.
b) Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land.
c) A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical propert
d) The process used to extract natural gas from the deep layers of rock in which it is embedded.

Continental Drift Theory
a) the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride
b) A place where an old, eroded rock surface is in contact with a newer rock layer.
c) The process of selecting a few organisms with desired traits to serve as parents of the next generation. Also known as artifi
d) Solid particles settling at the bottom of a liquid

Continental Drift Theory
a) the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride
b) A place where an old, eroded rock surface is in contact with a newer rock layer.
c) The process of selecting a few organisms with desired traits to serve as parents of the next generation. Also known as artifi
d) Solid particles settling at the bottom of a liquid

Radioactive Dating
a) A technique used to determine the actual age of a fossil on the basis of the amount of a radioactive element it contains
b) length of time required for half of the radioactive atoms in a sample to decay
c) An attraction between molecules of different substances
d) Not shiny

Igneous Rock
a) a type of rock that forms from the cooling of molten rock at or below the surface
b) Commonly used as an index fossil
c) Definite shape and volume
d) mechanism of population control in which a population is regulated by predation

Geologic Time Scale
a) A record of the geologic events and life forms in Earth's history.
b) property of having distinct and opposite charges (positive and negative).
c) the process by which one or more substances change to produce one or more different substances
d) remotely operated vehicle, underwater robot that explores the ocean

Natural Selection
a) NOT RANDOM! A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates t
b) Resistance evolving rapidly in many species of bacteria due to misuse of antibiotics.
c) An underground formation that contains groundwater
d) An organism that breaks down wastes and dead organisms

GMO
a) Genetically modified organism made when DNA is removed from one organism and placed within the DNA of what can be a very diff
b) Horizontal rows on the periodic table
c) A form of technology that uses living organisms, usually genes, to modify products, to make or modify plants and animals, or
d) easily broken

Selective Breeding
a) The process of selecting a few organisms with desired traits to serve as parents of the next generation. Also known as artifi
b) A break in the earth's crust, found near tectonic plates
c) Process that releases energy by breaking down glucose into carbon dioxide and water vapor.
d) any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds

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

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