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Earth Science Exam

Final Exam A1

QuestionAnswer
A concentration of mineral fragments at the bottom of a stream bed is a placer deposit.
Scientists hope to build a nuclear fusion reactor fueled by ocean water.
Petroleum forms in permeable rock due to heat and pressure from layers of sediment.
The most abundant fossil fuel in the world is coal.
What happens during nuclear fission? The nucleus of a large atom splits into two or more smaller nuclei.
The water for geothermal power plants is heated by magma ­heated rock.
The source of 11% of the United States’ electricity is hydroelectric energy.
The energy source in which a dam plays a key role is hydroelectric.
fossil fuel made of liquid hydrocarbons protelum
natural resource formed from the remains of living things fossil fuel
the hardest form of coal anthracite
the most abundant type of coal bituminous coal
unrefined petroleum crude oil
Which of the following is NOT part of scientific methods? Become a scientist
Earth science is the scientific study of Earth and its universe
An idea that has been tested repeatedly and gains acceptance is called a theory.
What are the four main branches of Earth science? geology, oceanography, astronomy, meteorology
Scientists predict that worldwide coal reserves will last 200 years.
Which describes a way to conserve fossil fuels? Wash only full loads of laundry.
What do scientists predict about world freshwater resources? a water shortage by 2050
Which is most responsible for destruction of wildlife habitats? surface mines
How is the energy that reaches Earth from the sun produced? nuclear fusion
Coal deposits are formed by carbonization of plant remains.
An energy source that heats fuel rods to create steam for electric generators is nuclear fission.
Fossil fuels consist mainly of hydrocarbons.
Petroleum and natural gas are most often mined from permeable sedimentary rock.
A well that is drilled to reach hot water heated by magma is harnessing geothermal energy.
Which of the following is an effect of air pollution? destruction of the ozone layer
an explanation based on observation hypothesis
an explanation of a phenomenon that reaches general acceptance theory
a factor that is manipulated independent variable
the process of using the senses to obtain information observation
a factor that changes as a result of manipulating other factors dependent variable
a mixture of gases, primarily nitrogen, oxygen, and argon, that surrounds Earth atmosphere
the lowest layer of the atmosphere, in which temperature drops at a constant rate as altitude troposphere
the layer of the atmosphere in which temperature increases as altitude increases; contains the ozone layer stratosphere
the coldest layer of the atmosphere in which temperature decreases as altitude increas mesosphere
the uppermost layer of the atmosphere; includes the ionosphere thermosphere
Created by: sancheza9
 

 



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