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Conceptual Physics

First test 2nd half of notes

QuestionAnswer
what type of measurements do scientists use while engaging in scientific measurement? Standarded measurements know as the International System of Units (SI)
why do scientists use SI as a form of measurement?(2) 1) Accepted worldwide 2) Adapted from older Metric System
How is mass measured? Grams (g)
How is length measured? Meters (m)
How is volume measured? Liters (L)
In order to define larger or smaller quantities, how are the measurements defined? Combines base units and prefixes (km = kilometers; cg = centigrams)
What does the prefix Giga- (G) mean? 1,000,000,000 ( EX: 1GB=1,000,000,000B)
What does the prefix Mega- (M) mean? 1,000,000 (EX: 1MHz = 1,000,000 Hz)
What does the prefix kilo- (k) mean? 1,000 (EX: 1km = 1,000 m)
What does the prefix centi- (c) mean? 0.01 (EX: 100cm = 1 m)
What does the prefix milli- (mm) mean? 0.001 (EX: 1,000mm = 1m)
I am a close agreement by observers of a phenomenon... What am I? Fact
Facts can be _______ if new evidence is discovered? Changed
I am an educated guess that maybe shown to be true by experimentation... What am I? Hypothesis
I am rules about nature that have been verified by experiments that are believed to be true... What am I? Laws (principles)
If a scientist finds evidence that contradicts a hypothesis, law, or principle then what happens? It must be changed or abandoned
What if a scientist finds evidence that he would like to be different? He must accept those findings
I am a hypothesis that has not yet been tested... What am I? Theory
How is a theory in everyday speech different from a theory in scientific language? A theory in everyday speech is an idea that has not yet been tested, while a theory in scientific language has been well-tested by experiments
What two conditions must a hypothesis have in order to be scientific? 1) Linked to understanding of nature 2) Testable
In order for a hypothesis to be a scientific hypothesis it must have a test for ________. Wrongenss
Created by: douglastmo