7A 4.1.2b

Front

What is percent error?

Back

Percent error is a measure of how inaccurate a measurement is, expressed as a percentage of the accepted value. It is calculated using the formula: Percent Error = |(Experimental Value - Accepted Value) / Accepted Value| x 100.

Front

How can increasing the number of trials affect the accuracy of an experiment?

Back

Increasing the number of trials can lead to more reliable results by averaging out random errors, thus reducing the percent error.

Front

What is the purpose of conducting multiple trials in an experiment?

Back

The purpose of conducting multiple trials is to ensure that the results are consistent and to minimize the impact of random errors.

Front

What does it mean if an experiment has a high percent error?

Back

A high percent error indicates that the experimental results are significantly different from the accepted value, suggesting potential issues with the experiment's design or execution.

Front

What is a controlled variable in an experiment?

Back

A controlled variable is a factor that is kept constant throughout an experiment to ensure that the results are due to the independent variable.

Front

What is the difference between independent and dependent variables?

Back

The independent variable is the factor that is changed or manipulated in an experiment, while the dependent variable is the factor that is measured or observed.

Front

Why is it important to have a hypothesis in an experiment?

Back

A hypothesis provides a testable prediction that guides the direction of the experiment and helps in interpreting the results.

Front

What is the significance of the accepted value in an experiment?

Back

The accepted value is a standard or known value that is used for comparison to evaluate the accuracy of experimental results.

Front

How can random errors affect experimental results?

Back

Random errors can lead to variations in measurements that are unpredictable and can affect the reliability of the results.

Front

What is systematic error?

Back

Systematic error is a consistent, repeatable error that occurs due to a flaw in the measurement system or experimental design.