| A | B |
|---|
| observation | use of the senses to percieve objects or events as they are, free of interpretation or bias |
| quantitative observation | measurement of the amount of matter present |
| qualitative observation | description of the linds of matter that are present; physical description |
| inference | to interpret or explain an observation based on prior experience and reasoning of the observer |
| scientific notation | the system by which very small or very large numbers are abbreviated by using powers of ten; also called exponential notation |
| SI System | System Internationale; a standardized measurement system based on the powers of ten and decimals; also called the Metric System |
| measurement | a collection of quantitative observations / data that express the dimensions, extent, capaity, etc.. of an object |
| mass | a measure of the quantity of a susbstance |
| weight | the measure for the amount of gravity on an object |
| scale | a measurement tool that is used to measure weight |
| balance | a measurement tool that is used to measure mass |
| meter | the standard SI unit of measurement for length or distance |
| length | the SI system measurement of distance |
| accuracy | the degree to which individual measurements agree with a true or correct value for a quantity |
| precision | the degree of uncertaintly due to the measurement instrument and/or the degree of agreement between repeated measurements |
| metric prefixes | a series of prefixes that go at the beginning of a base unit that tell the power or subpower of that base unit |
| cosmology | the study of the origin and evolution of the universe |
| astronomy | the study of the universe including our solar system |
| evolution | change over time |
| Big Bang Model or Theory | the most widely accepted explananation for the formation of the Universe |
| cosmic background radiation | a type of microwave radiation that is detected using radio telescopes that is thought to be the remant of the big bang |
| cosmological principle | space is roughly the same everywhere and in ever direction over large scales |
| general relativity | Einstein's theory that discusses the effect of gravity on matter, space, and time |
| fusion | the process in which hydrogen atoms fuse together to form helium and give off tremendous energy |
