Created by Angelique Colby
about 9 years ago
|
||
Question | Answer |
atmosphere | the layer of gases that surrounds the earth and protects it from too much sunlight |
lithosphere | rocks, plants, and minerals make up this layer |
the crust | the outer part of the lithosphere |
people build homes and cities on this layer | lithosphere |
Earth's lithosphere contains | rocks, soil, and minerals |
the center layer of the earth | core |
core | center layer of the earth, made up of solid, very hot metals |
mantle | layer below the crust, partly solid and partly semi-solid |
What did early geographers notice in the 1500s? | the continents fit together like puzzle pieces |
plate tectonics theory | says that the earth's surface is made up of about 20 moving plates |
how continents move | explained by plate tectonics theory |
Plate movement causes what? | earthquakes, mountains, and volcanoes |
weathering | breaking down or physically changing rock |
When does water cause physical weathering? | Breaks a rock into pieces by expanding when it freezes |
hypothesis | a guess or idea |
scientific theory | plate tectonics |
igneous rock | when melted mantle cools |
metamorphic rock | igneous or sedimentary rock that has been changed by heat or pressure |
sedimentary rock | sand grains that have been cemented together |
sand | occurs when weathered, igneous rock breaks down |
delta | new land formed at the mouth of a river by deposition |
fossil | the remains of any organism |
the rock cycle | the process of how rocks change form |
erosion | caused by strong winds or water |
4 spheres | 1. biosphere - all living things 2. atmosphere - gases around Earth 3. hydrosphere - water on and around earth 4. lithosphere - layer of rocks, soil, and minerals |
Pangea | supercontinent that existed millions of years ago; split apart into seven continents through plate movement |
Want to create your own Flashcards for free with GoConqr? Learn more.