summaries of sections in Silvera Science!
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Created by:
salpal62 on September 30, 2010
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Description:
from txt book study guide!!
Classes:
HIES Study Help, Hies Exam Help, HIES 8th 2011, Hies Study for Exams!!, Advanced Classes group, 9th GRADE!! HAPPY STUDYING!!
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13 terms
Terms | Definitions |
|---|---|
 Section 1 (1) |  science is a way of learning about the natural world, such as a hurricane, through investigation |
| Section 1 (2) |  Scientific investigation can involve making observations, testing models, or conducting expirements |
| Section 1 (3) | Scientific experiments investigate the effect of one variable on another. All other variables are kept constant! |
| Section 1 (4) | Scientific laws are repeated patterns in nature. Theories attempt to explain how and why these patterns develop! |
| Section 2 (1) | A standard of measurement is an exact quantity that people agree to use as a basis of comparison. The International System of Units, or SI, was established to provide a standard and reduce confusion!!! |
| Section 2 (2) | When a standard of measurement is established, all measurements are compared to the same exact quantity--the standard. Therefore, all measurements can be compared with one another!! |
| Section 2 (3) | The most common used SI units include: length-meter, volume-liter, mass-kilometer, time-second |
| Section 2 (4) | In SI, prefixes are used to make the base units larger or smaller by multiples of ten! |
| Section 2 (5) | Any SI unit can be converted to any other related SI unit by multiplying by the appropriate conversion factor. These towers are 45,190cm in height is equal to 451.9m |
| Section 3 (1) |  Graphs are a visual representation of data that make it easier for scientists to detect patterns. |
| Section 3 (2) |  Line graphs show continuous changes among related variables. Bar graphs show data collected by counting. Circle graphs show how a fixed quantity can be broken into parts!! |
| Section 3 (3) | To create a circle graph you have to determine the angles for your graph. |
| Section 3 (4) | In line graph, the independent variable is always lotted on the horizontal x-axis. The dependent variable is always plotted on the vertical y-axis!! |
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