Scientific Measurements

Front

What are significant figures?

Back

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 part.

Front

How many significant figures are in the number 0.007500?

Back

4

Front

What is the rule for rounding to one significant figure?

Back

When rounding to one significant figure, look at the first non-zero digit and round based on the digit immediately following it.

Front

Round 12,678.56 to one significant figure.

Back

10,000

Front

What is the rule for rounding to four significant figures?

Back

When rounding to four significant figures, keep the first four digits that contribute to the number's precision and round based on the digit immediately following.

Front

Round 12,678.56 to four significant figures.

Back

12,680

Front

How many significant figures are in the number 6.50 x 10^4?

Back

3

Front

What is precision in measurements?

Back

Precision refers to how close measurements are to each other, regardless of whether they are close to the true value.

Front

What is accuracy in measurements?

Back

Accuracy refers to how close a measurement is to the true or accepted value.

Front

What is the difference between precision and accuracy?

Back

Precision is about consistency in measurements, while accuracy is about correctness in relation to the true value.