7th Chapter 0 Review

Front

What should scientists rely on if they cannot obtain exact numbers?

Back

Estimate.

Front

Which of the following is an example of a model?

Back

All of the above (a map, a computer program, a mathematical equation).

Front

What is the independent variable in an experiment?

Back

The ONE thing you change.

Front

What type of observation describes the color of a car?

Back

Qualitative observation.

Front

What is it called when you interpret observations based on reasoning from what you already know?

Back

Inferring.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between variables.

Front

What is the dependent variable in an experiment?

Back

The variable that is measured or observed.

Front

What is the purpose of a control group in an experiment?

Back

To provide a standard for comparison.

Front

What is a scientific theory?

Back

A well-substantiated explanation of an aspect of the natural world.

Front

What is the difference between qualitative and quantitative data?

Back

Qualitative data describes qualities or characteristics; quantitative data involves numbers and measurements.