30031252
Description
Flashcards by Adriana Vincelli-Joma, updated more than 1 year ago
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Created by Adriana Vincelli-Joma
about 3 years ago
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| Question | Answer |
| Theory | -explains patterns in nature -supported by scientific evidence -verified by various groups of researchers |
| Law | -describes generalized pattern in nature -supported by scientific evidence and repeated experiments |
| SI (Systeme International) units | international system of units that scientists agreed to use |
| Units for time | -second -minute (60 sec) -hour (60 min, 3600 sec) |
| Unit for length | -millimeter -centimeter (10 mm) -meter (100 cm, 1000 mm) -kilometer (1 x 10^6 mm, 1 x 10^5 cm, 1000 m) |
| Unit for mass | -gram -kilogram (1000 g) |
| accuracy | degree to which measured value agrees with correct value |
| precision | degree to which repeated measurements agree with each other |
| uncertainty | quantitative measure of how much measured values deviate from standard or expected value |
| %unc | (unc A)/A x 100% |
| significant figures | express precision of measuring tool used to measure value |
| method of significant figures | last digit written down in measurement is first digit with some uncertainty |
| sig fig in calculations | -sig figs in final answer cannot exceed sig figs in least precise measurement |
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