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Andy Sci. 703
7th Grade Science Terms
| Question | Answer |
|---|---|
| Continental Drift | Hypothesis that the continents had once been joined together and that the continents have slowly moved apart over Earth's surface. |
| Convergent Boundary | Two plates push against eachother, one is forced down beneath the other. |
| Divergent Boundary | Where two tectonic plates are moving away from one another. |
| Transform Boundary | Two plates slide past one another, in this boundary, neither plate is added to at the boundary, nor destroyed. |
| Plate Tectonics | Scientific theory that describes the large scale motions of Earth's lithosphere. |
| Latitude | A line that goes east to west,measure North and South of the equator. |
| Longitude | A line that goes North to South and measure east to west. |
| Equator | The line that goes through the middle of Earth. |
| Density | Mass divided by volume. |
| Core | Solid center of Earth |
| Crust | Outside layer of Earth |
| Mantle | The middle layer of Earth |
| Asthenosphere | Part of the upper mantle that exhibits plastic properties. |
| Earth Science | The study of Earth and space. |
| Variable | Different factors that you can change in an experiment. |
| Independent Variable | The variable that you change |
| Constants | The variables you do not change in an experiment. |
| Dependent variable | The variable being measured. |
| Plains | Large, flat areas, often found in the interior regions of continents. |
| Plateaus | Flat. raised areas of land made up of rocks that have been uplifted by forces within Earth. |
| Folded Mountains | Rock layers folded like a rug that has been pushed up against a wall. |
| Volcanic mountains | Begin to form when molten material reaches the surface through a weak area of the crust.The materials pile up, layer upon layer, until a cone-shaped structure forms. |
| Prime meridian | An imaginary line that represents 0 degrees longitude. |
| Map scale | The relationship between the distances on the map and distances on Earth's surface. |
| Map legend | Explains what the symbols used on the map mean. |