Unit Conversion & Sig Figs

Front

What type of number is estimated to a certain number of significant figures, like a car's speed?

Back

Measured numbers are estimated to a certain number of significant figures.

Front

Which standard base unit is derived from an actual value but not universal?

Back

The second is derived from an actual value but not universal.

Front

What type of number can be counted, like the number of eggs in a dozen?

Back

Exact numbers can be counted.

Front

What is the definition of the International Prototype Kilogram?

Back

The kilogram is defined by a hunk of platinum and iridium known as the International Prototype Kilogram.

Front

What are the two kinds of numbers used in experimental calculations?

Back

Exact and measured numbers are used in experimental calculations.

Front

Define significant figures.

Back

Significant figures are the digits in a number that contribute to its precision.

Front

What is the difference between exact numbers and measured numbers?

Back

Exact numbers have no uncertainty and are counted, while measured numbers have some degree of uncertainty.

Front

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

Back

Count all non-zero digits, any zeros between them, and trailing zeros only if there is a decimal point.

Front

What is the purpose of unit conversion?

Back

Unit conversion allows for the expression of a quantity in different units, facilitating comparison and calculation.

Front

What is the metric system?

Back

The metric system is a decimal-based system of measurement used worldwide, based on units like meters, liters, and grams.