Module 6 Vocabulary Flashcards
Earth’s Crust
Earth’s outmost layer of rock.
Sediment
Small, solid fragments of rock and other substances that are carried and deposited by wind, water or ice. Examples would be sand mud and gravel.
Sedimentary Rock
Rock formed when chemical reactions cement sediment together, hardening them.
Igneous Rock
Rock that forms from molten rock.
Metamorphic Rock
Igneous or sedimentary rock that has been changed into a new kind of rock as a result of great pressure and temperature.
Plastic Rock
Rock that behaves like something in between a liquid and a solid.
Earthquake
Vibration of the earth that results either from volcanic activity or rock masses suddenly moving along a fault.
Focus
The point where an earthquake begins
Fault
The boundary between two sections of rock that can move relative to one another.
Epicenter
The point on the surface of the earth directly above an earthquake’s focus.