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chapter 2 science mid term
Terms in this set (20)
the classification and collection of data that are in the form of numbers is called
the group that does not receive the experimental treatment in an experiment is the
by examining ___, scientists can test predictions for situations in which it is impossible or unethical to use experiments
scientists use statistics to
in an experiment, the factor of interest is called the
the average mass of a wolf in a pack of wolves is an example of
a model of a dinosaur is an example of a ____ model
The chance that an earthquake will occur in your town during the next year is an example of
the experimental method includes which of the following steps?
observing, hypothesizing, predicting, experimenting, and communicating results
why are mathematical models important?
they are useful in situations with many variables, they are useful to create digital images, and they can represent how a system or process works.
Which step in the experimental method are scientists conducting when they photograph birds in flight?
if you consider what will add to our understanding of the natural world in making an environmental decision, you are examining a _____ value
before you can make a decision using a decision-making model, what step must you take?
explore the consequences of each option, consider which values apply to the issues, and gather information
in a scientific investigation, it is important that the number of objects or events being sampled be
large enough to give an accurate estimate for the whole population
a good hypothesis is more than a guess because it
makes logical sense
What essential characteristic does a good experiment have?
a control group is given the experimental treatment, and a single variable is tested
your county is considering buying land to form a nature preserve. on this land, an endangered species of bird is known to breed. which of the following is a possible negative short-term consequence to the county making this decision?
environmental controls are made less strict outside the preserve area
when making a decision about whether or not to build a dam, you are considering an economic value when you ask which of the following questions?
how many jobs will building the dam generate?
what step in a simple environmental decision-making model are you taking when you consider whether or not people will benefit financially from setting aside land as a national park?
when you ask the question, "if a marsh is included as part of a nature preserve, will it protect our water resources?" you are considering which of the following types of values?
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