| A | B |
|---|
| Problem, experiment, hypothesis, observation, and conclusion | The steps of the scientific method are: |
| Something that is kept the same thoughout an experiment. | Control |
| Something that changes throughout an experiment | Variable |
| The Metric System is an international system of | Measurement |
| In the Metric system, the base units for measuring are the following: | Liter, gram, meter |
| Three prefixes used frequently in the Metric System: | kilo, centi, milli |
| All matter has: | mass, volume, and density |
| The four states of matter are: | solid, liquid, gas, and plasma |
| Melting | is when a solid gains heat and becomes a liquid |
| Freezing is when a liquid loses heat and becomes | solid |
| Evaporation | is when liquid gains heat and becomes a gas |
| Condensation is when a ________ loses heat and becomes a liquid | gas |
| Sublimation | is when a solid gains heat and becomes a gas. |
| Uniformitarianism | the principle that states that the same geologic processes shaping the Earth today have been at work throughout Earth's history |
| Catastrophism | the principle that states all geologic change occurs suddenly |
| Earth's history is divided into: | eons, eras, periods, and epochs |
| Relative dating | tells whether one event happened before or after another event. |
| Absolute dating | is the actual age in years of a geologic event, rock, or fossil |
| A paleontologist | studies fossils |
| A geologic column | an ideal sequence of rock layer that contains all the known fossils and rock formations on Earth arranged from oldest to youngest |
| Minerals | are nonrenewable, naturally occuring, inorganic soles with definite chemical composition and crystal structure |
| A crystal | is a substance arranged in an orderly pattern that repeats over and over again |
| Ores | substances that contain enough of a mineral to make mining profitable |
| Gems | minerals that are rare, valuable, and beautiful |
| Sedimentary | rocks from when sediments weather, erode, are deposited and become cemented or compacted together |
| igneous | rocks form when magma or lava cools. |
| metamorphic | rocks form when existing rock are changed due to intense heat and pressure |
| Minerals can be identified by: | crystal shape, cleavage, hardness, color, luster, streak, and density |
