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!!