Chapter 1 Flashcards
What is physics?
The study of matter and energy, and the relationship between them.
What is Matter?
Anything that takes up space and has mass
What is energy?
The ability to work or produce a change
What is a Hypothesis?
An educated guess that explains some set off observations. It must be testable.
What is the Scientific Theory?
A collection of a large body of information about some aspect of nature.
What is a theory do?
It explains our best knowledge of nature.
Can theories change?
Yes.
What is a law?
A hypothesis that is tested but never proven false.
What is a postulate/principle?
Is given statement that is presumed true without evidence
What is an Independent Variable?
The variable that you change during the experiment.
What is a Dependent Variable?
It he thing that changes due to the independent variable
What is a Conversion Factor?
The easiest way to convert one unit to another.
What is accuracy?
How close a measurement is to the actual length.
What is precision?
Precision is how exact a measurements
What is a significant digit?
How we record correct precision of measurement
