click below
click below
Normal Size Small Size show me how
Module 6
Apologia Exploring Creation with General Science 2nd ed. Module 6
Question | Answer |
---|---|
Catastrophism | The view that most of earth's geological features are the result of large-scale catastrophes such as floods, volcanic eruptions, etc. |
Uniformitarianism | The view that most of earth's geological features are the result of slow, gradual processes that have been at work for millions or even billions of years. |
Humus | The decayed remains of once-living creatures. |
Minerals | Inorganic crystalline substances found naturally in the earth. |
Erosion | The process by which rock and soil are broken down and transported away. |
Unconformity | A surface of erosion that separates one layer of rock from another. |
Sedimentary rock | Formed from sediments (sand, silt, minerals, and other components of soil) that are laid down by water or some other agent. |
Igneous rock | Forms from molten rock (magma) that cools and solidifies. |
Metamorphic rock | When either sedimentary or igneous rock has undergone change due to extreme heat and pressure. |
Lamination | When a single layer of rock is less than 1 centimeter. |
Nonconformity | When stratified layers rest on top of unstratified layers. |
Disconformities | When there are parallel, stratified rock Layers above and below the unconformity, but there is a clear surface of erosion between them. |
Paraconformities | Unidentifiable unconformities. |
Intrusion | "Veins" of igneous rock that shoot right through several layers of sedimentary rock. |
Sills | Intrusions that run in the same direction as the strata. |
Dikes | "Veins" that run perpendicular to the direction of the strata. |
Weathering | The process by which rocks are broken down to form sediments. |
Stalactite | Deposits that start on the ceiling and form an icicle-like structure hanging down. |
Stalagmite | Deposits that form a structure that rises from the ground. |
Column | The meeting of a stalagmite and stalactite to form a single structure. |