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Test Description: 8th Grade Vocabulary
Instructions: Answer all questions to get your test result.
1) galaxy
A
marks the beginning of winter, December 21
B
process in Earth's mantle that is driving the movement of the plates
C
celestial body of billions of stars
D
the ring around the nucleus where electrons can be found
2) divergent boundary
A
all the continents on Earth used to be joined as one giant landmass known as Pangaea and have slowly drifted apart
B
type of boundary where two plates divide creating a mid-ocean ridge and new crust
C
an intense storm with low pressure, high winds, and forms over warm ocean waters
D
a human-made underwater structure built to promote marine life
3) subduction
A
the hemisphere is tilted toward the Sun receiving direct sunlight
B
the process that occurs when one plate sinks below another plate creating a trench and volcanoes
C
fully visible; 100% illuminated
D
a human-made underwater structure built to promote marine life
4) convection currents
A
marks the beginning of winter, December 21
B
type of boundary where two plates separate creating a mid-ocean ridge and new crust
C
process in Earth's mantle that is driving the movement of the plates
D
type of pressure that brings clouds and precipitation
5) convergent boundary
A
an organism that gains energy by feeding on other organisms
B
the spiral shaped galaxy in which we live
C
an organism that can make its own food through photosynthesis
D
type of boundary where two plates collide creating mountains and/or volanoes
6) transform boundary
A
all space and the matter it contains
B
theory that says the universe began as a small point that rapidly expanded
C
an organism that can make its own food through photosynthesis
D
type of boundary where two plate slide past one another creating a fault line
7) continental crust
A
thick part of Earth's crust, made of granite, less dense than oceanic crust
B
a subatomic particle that contributes to the mass of an atom but has no charge
C
the motion of an object around a point, to orbit
D
the variety of all living organisms in an ecosystem
8) Genetic Variation
A
A solution that contains less than the maximum amount of dissolved solute in a concentration.
B
an opening in the sea floor out of which heated mineral-rich water flows.
C
Differences among individuals in the composition of their genes or other DNA segments
D
organisms that get energy by consuming other organisms (consumers)
9) Trilobite
A
A change in matter that produces one or more new substances
B
Commonly used as an index fossil
C
can lead to diabetes and heart disease
D
Very reactive, likes to combine to form salts with the 1st and 2nd groups. Group 17.
10) Sedimentary Rock
A
an element that has properties of both metals and nonmetals
B
A type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented toget
C
Portion of the shoreline that lies between the high and low tide lines
D
A segment of DNA on a chromosome that codes for a specific trait
11) Evolution
A
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical propert
B
Change in a kind of organism over time; process by which modern organisms have descended from ancient organisms.
C
Excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land.
D
The process used to extract natural gas from the deep layers of rock in which it is embedded.
12) Continental Drift Theory
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 place where an old, eroded rock surface is in contact with a newer rock layer.
C
Solid particles settling at the bottom of a liquid
D
the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride
13) Continental Drift Theory
A
A place where an old, eroded rock surface is in contact with a newer rock layer.
B
the idea that continents slowly shift their positions due to movement of the tectonic plates on which they ride
C
Solid particles settling at the bottom of a liquid
D
The process of selecting a few organisms with desired traits to serve as parents of the next generation. Also known as artifi
14) Radioactive Dating
A
An attraction between molecules of different substances
B
A technique used to determine the actual age of a fossil on the basis of the amount of a radioactive element it contains
C
Not shiny
D
length of time required for half of the radioactive atoms in a sample to decay
15) Igneous Rock
A
Definite shape and volume
B
mechanism of population control in which a population is regulated by predation
C
a type of rock that forms from the cooling of molten rock at or below the surface
D
Commonly used as an index fossil
16) Geologic Time Scale
A
A record of the geologic events and life forms in Earth's history.
B
remotely operated vehicle, underwater robot that explores the ocean
C
property of having distinct and opposite charges (positive and negative).
D
the process by which one or more substances change to produce one or more different substances
17) Natural Selection
A
An underground formation that contains groundwater
B
NOT RANDOM! A process in which individuals that have certain inherited traits tend to survive and reproduce at higher rates t
C
An organism that breaks down wastes and dead organisms
D
Resistance evolving rapidly in many species of bacteria due to misuse of antibiotics.
18) GMO
A
A form of technology that uses living organisms, usually genes, to modify products, to make or modify plants and animals, or
B
Horizontal rows on the periodic table
C
easily broken
D
Genetically modified organism made when DNA is removed from one organism and placed within the DNA of what can be a very diff
19) Selective Breeding
A
any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds
B
Process that releases energy by breaking down glucose into carbon dioxide and water vapor.
C
The process of selecting a few organisms with desired traits to serve as parents of the next generation. Also known as artifi
D
A break in the earth's crust, found near tectonic plates
20) Law of Superposition
A
Destructive. When two plates move towards one another.
B
Number of protons and neutrons
C
The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it
D
Unreactive gases found in group 18
*select an answer for all questions
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