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Conceptual Physics
First test 2nd half of notes
| Question | Answer |
|---|---|
| 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
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