Which of the following is the usual order of applying the scientific process to a problem
Observation -- question -- hypothesis -- experimentation -- analysis -- conclusion
Which of the following is the definition of the scientific hypothesis
A possible explanation for an observation
Scientists try to reduce errors in their observations and measurements by
A,B,C, and D
Which of the following statements does not describe the scientific enterprise
Established scientific theories are not challenged and continue to hold true
An idea that has been tested widely, is supported by extensive evidence, and is accepted by most in a particular field of study is called a
Theory
When new information or ideas can disprove or overthrow a well-accepted scientific theory, it is called
A paradigm shift
The fundamental substances of matter that have unique sets of properties are called
Elements
Isotopes are forms of an element that differ from one another by having different
Mass numbers
An atom or group of atoms with one or more net positive or negative charges is an
Ion
The measurement of the concentration of hydrogen ions in a solution is called
pH
An example of an organic compound would be
CH4
The macromolecules that make up living organisms are
All of these
The distinct piece of DNA containing instructions for making proteins is
The amino acid
The monomer of the protein polymer is the
Amino acid
Which of the following sources of iron would be of the highest quality
A one-half mile deep deposit of iron ore
Which of the following is not an example of a physical change
A plant converts carbon dioxide into carbohydrates
Which of the following is not one of the nuclear changes matter can undergo
Evaporation
All of the following statements can be concluded from the law of conservation of matter except
Eventually we will run out of matter if we keep consuming it
Scientists classify energy as either
Potential or kinetic
Energy can be formally defined as
The ability to do work and transfer heat
Which of the following does not represent kinetic energy
A car at the top of a hill
Which of the following is an example of low-quality energy
Heat in the ocean
An example of potential is
Sugar in a sugar bowl
Which of the following statements is false
energy and matter can generally be converted into each other
The first law of thermodynamics tells us that
Energy is neither created nor destroyed
Which of the following statements does not apply to the second law of energy
Energy is neither created nor destroyed
Energy input is
Always equal to energy output
Earth's supply of concentrated, usable energy is being steadily
Depleted
The matter and energy laws tell us that we can recycle
Matter but not energy
The energy "lost" by a system is
Converted to lower-quality energy
Which of the following is not a key component of a system
All are key components
Which of the following is a property of a system
Functions in a regular and predictable manner
A positive feedback loop is illustrated by all of the following except
A thermostat maintaining a certain temperature in your house
A negative feedback loop is illustrated by all of the following except
Exponential population growth rate
Which one of the following does not illustrate a time delay
A fox eats a rabbit
Time delays in feedback systems allow changes in the environment to build slowly until the changes reach a
Tipping point
Which of the following is not an example of an environmental threshold having been crossed
Water pollution levels in developed countries have decreased
Which of the following does not represent synergistic interaction
Bartender who doesn't smoke gets lung cancer from secondary smoke
The community knew the effects of chemical X when it was used alone. They knew the same for chemical Z, so they set safe limits for use for both chemicals. When the chemicals were released at safe levels on the same lake there was a massive fish kill. The
A synergistic interaction
Human events that affect the environment are generally characterized by
Long delays between events and responses
Two or more processes interacting such that the combined effect is greater than the sum of the individual effects is called
A synergistic interaction