Review for Flashcard 4, Semester 1

Front

What are significant digits?

Back

Significant digits (or significant figures) are the digits in a number that contribute to its precision. This includes all non-zero digits, any zeros between significant digits, and trailing zeros in the decimal portion.

Front

How do you determine the number of significant digits in a measurement?

Back

The number of significant digits in a measurement is determined by identifying all non-zero digits, any zeros between them, and any trailing zeros in a decimal number.

Front

What is the estimated digit in a measurement?

Back

The estimated digit is the last digit in a measurement that is not known with certainty. It is typically the last digit that is rounded.

Front

In the measurement 7.1 cm, which digit is the estimated digit?

Back

In the measurement 7.1 cm, the digit '1' is the estimated digit.

Front

What is the x-axis in a graph?

Back

The x-axis is the horizontal axis in a graph, typically used to represent the independent variable.

Front

Where would 'Amount of Water' be placed on a line graph?

Back

'Amount of Water' would be placed on the x-axis of a line graph.

Front

What is a derived quantity?

Back

A derived quantity is a physical quantity that is calculated from other measurements, such as density, which is mass divided by volume.

Front

Which of the following is a derived unit?

Back

Density is a derived unit, as it is calculated from mass and volume.

Front

How do you calculate percent error?

Back

Percent error is calculated using the formula: Percent Error = |(Estimated Value - Actual Value)| / Actual Value x 100%.

Front

If Zed estimated 350 chips but found 210, what is his percent error?

Back

Zed's percent error is 67%.