Making Connections

Front

What is pulse rate?

Back

Pulse rate is the number of times the heart beats in one minute, typically measured in beats per minute (bpm).

Front

What factors can affect pulse rate?

Back

Factors that can affect pulse rate include physical activity, emotional state, body temperature, and overall health.

Front

What is the independent variable in an experiment?

Back

The independent variable is the factor that is changed or manipulated in an experiment to observe its effect on the dependent variable.

Front

What is the dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment, which is affected by changes in the independent variable.

Front

How does exercise typically affect pulse rate?

Back

Exercise generally increases pulse rate as the heart pumps more blood to supply oxygen to the muscles.

Front

What is a control in an experiment?

Back

A control is a standard for comparison in an experiment, which remains constant while other variables are changed.

Front

Why is it important to have a larger sample size in experiments?

Back

A larger sample size increases the reliability and validity of the results, reducing the impact of outliers.

Front

What is the significance of measuring resting pulse rate?

Back

Measuring resting pulse rate helps assess cardiovascular fitness and overall health.

Front

What is the purpose of a graph in scientific data?

Back

Graphs visually represent data, making it easier to identify trends, patterns, and relationships.

Front

What does it mean to increase the validity of an experiment?

Back

Increasing the validity of an experiment means ensuring that the results accurately reflect the relationship between the independent and dependent variables.