Environmental Science Unit 1 Review (Ch. 1-3)

When it is not possible to conduct an experiment, scientists test their predictions by

• examining correlations

• testing for one variable

• using a control

• remaining skeptical

An essential feature of every good experiment is that it should

• use a control

• graph data

• test a single variable

• Both (a) & (b)

Experimental methods include which of the following steps?

• remaining skeptical, organizing data, and analyzing data

• drawing conclusions, being open to new ideas, and communicating results

• observing, hypothesizing, predicting, experimenting, and communicating results

• being curious, imagining, being able to see patterns, observing, and predicting

What is not a description of a good hypothesis

• it makes logical sense

• it is a testable explanation of an observation

• it follows from what you already know about a situation

• it is a guess based on previous experiments

One of the key habits of the mind of scientists is ___________, which allows scientists to expand the boundaries of what we know.

• intellectual honesty

• replication

• imagination

• correlation

A road map is an example of a

• graphical model

• mathematical model

• conceptual model

• physical model

Statistics are not used by scientists to

• compare data

• analyze data

• gather data

• All of the above

In a scientific investigation, the size of the sample population should be large enough to

• reflect the probability of an unwanted outcome

• give an accurate estimate of the whole population

• closely resemble the system they represent

• All of the above

If you consider what will add to our understanding of the natural world in making an environmental decision, you are examining a(n) __________ value.

• ethical/moral

• aesthetic

• environmental

• scientific

What is the first step in an environmental decision-making model?

• explore the consequences of each option

• consider which values apply to the issue

• make a decision

• gather information