# summaries of sections in Silvera Science!

## 13 terms · from txt book study guide!!

### 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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