my homework because it's another hell.

experimentation Doing repeated tests to prove a scientific fact.

exponent The number of times a base number is multiplied times itself, shown as a superscript following the base number.

hypothesis A proposed answer to a specific scientific problem.

law A proven scientific fact which has never been falsified or an exception observed.

liter The standard metric unit of volume.

meter The standard metric unit of length.

metric system A system of measurement based on the number ten.

scientific method The ordered steps a scientist uses in his or her work.

scientific notation A system of writing numbers as a multiple of a power of 10.

second The standard unit of time.

significant figures Those digits in a number that have true value.

theory A suggested or proposed solution to a general scientific area of inquiry based upon a series of experiments or interpretation of observed data.