unit 1 - intro to measurements

Scientific Method

approach to acquire knowledge through the observation of phenomena

Experiment

An observation of natural phenomena tested in a controlled and repeatable process and a rational conclusion can be made

Hypothesis

A tentative and testable explanation for an observation or a series of observations

Theory

A tested explanation of basic natural phenomena

Law

 A statement that summarizes a vast number of experimental observations, and describes or predicts some aspect of the natural world

Does the scientific method ever stop?

No

2 parts of every measurement

number and unit

precision

agreement among repeated measurements (same answer repeatedly)

Accuracy

•  agreement between answer and the accepted answer (hitting bullseye)

(T/F) almost all measurements contain uncertainty

true

more significant figures indicate (lower/higher) uncertainty

lower

1cm³ =

1 mL

°F and °C

5/9(°F - 32) = °C

°K

°C + 273.15