26 terms

Unit 1 - Introduction to Environmental Science

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Control
Used in an experiment to show the results of an experiment are actually a result of the conditions being tested.
Dependent Variable
A factor that can change if the independent variable is changed.
Independent Variable
The factor that is manipulated by the experimenter.
Equator
The reference point for latitude; 0 degrees.
Prime Meridian
The reference point for longitude; 0 degrees.
Theory
An explanation based on many observations during repeated experiments that is valid only if it is consistent with observations, makes predictions that can be tested, and is the simplest explanation of observations.
Geology
Science dealing with the earth's history as recorded in rocks
Oceanography
Study of Earth's oceans
Meteorology
Science dealing with the atmosphere and weather
Astronomy
Study of the universe and stars
Geosphere
the solid part of the earth consisting of the crust and outer mantle
Hydrosphere
All the water at and near the surface of the earth, 97% of which is in oceans
Atmosphere
A mixture of gases that surrounds a planet or moon.
Biosphere
Consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
Gravity
A force of attraction between objects that is due to their masses
Meter
Metric unit for length
Mass
A measure of the amount of matter in an object
Gram
Metric unit for mass
Celsius
Metric unit for temperature
Volume
A measure of the size of a body or region in three-dimensional space
Liter
Metric unit for volume
Density
Density=mass/volume
Scientific Method
A series of steps followed to solve problems including collecting data, formulating a hypothesis, testing the hypothesis, and stating conclusions.
Hypothesis
A testable prediction, written as "if, then" statement
Variable
A factor that can change in an experiment
Magnetic Field
The area of magnetic force around the Earth, protects us from solar radiation.
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