Unit Test: Biology Test

Hypothesis

A testable prediction based on observations that describes a cause-and-effect relationship between variables.

Independent Variable

The cause or change in an experiment.

Dependent Variable

The effect or response that is measured in an experiment.

Observation

A description of something that can be seen, smelled, touched, tasted, or heard, not an opinion.

Experimental Group

The groups that are being tested in an experiment.

Control Group

The group used for comparison with the experimental groups.

Qualitative

Describes qualities or characteristics.

Quantitative

Uses numbers to measure something.

Principle

A statement based on repeated experimental observations.

Inference

A guess about an object or outcome based on observations.

Accuracy

How close a measurement is to the correct or accepted value.

Precision

How close measurements are to each other.

Constants

Factors that remain unchanged throughout the experiment.

Significance of Accuracy and Precision

Accuracy indicates closeness to the correct answer, while precision allows for comparison of data.

Steps of Conducting an Experiment

Define your variables, conduct the experiment, and analyze the results.

Scientific Investigation Design

An example includes identifying appropriate constants and variables (IV and DV).

Conducting a Scientific Experiment

Involves using appropriate laboratory equipment and safety measures (e.g., goggles, gloves).

Identifying Variables

The dependent variable changes as a result of the independent variable, which is not changed by other variables.