Scientific Investigations

Front

Why must an experiment be repeated?

Back

To ensure validity in the experiment, the results should be the same each time.

Front

A factor that changes in an experiment is known as a(n) _______.

Back

Variable.

Front

Which of the following represents a constant in an experiment where different objects are dropped from the same height?

Back

The height at which the object is dropped.

Front

In Lisa's investigation of the effect of environmental temperature on heartbeat, what is the independent variable?

Back

Temperature.

Front

How many variables does a controlled experiment contain?

Back

1.

Front

What is a hypothesis?

Back

A testable prediction about the relationship between variables.

Front

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

Back

To provide a baseline for comparison against the experimental group.

Front

Define 'dependent variable'.

Back

The variable that is measured in an experiment; it responds to changes in the independent variable.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a constant in an experiment?

Back

A factor that remains unchanged throughout the experiment.