Trench: a deep, narrow depression on the sea floor Flashcards
(30 cards)
What is evidence?
Information that supports or refutes a claim.
What is nuclear waste?
Leftover radioactive materials produced by reactors at nuclear power plants or other nuclear facilities.
What is a trade-off?
A desirable outcome given up to gain another desirable outcome.
What is an aquifer?
A rock layer that allows groundwater to flow through it and collect.
What is an aquitard?
A rock layer that restricts the flow of groundwater.
What is groundwater?
Water found underground in the spaces and cracks within earth materials.
What is sediment?
Small pieces of earth materials such as rocks, shells, and debris.
What is sedimentary rock?
Layers of hardened sediment.
What is a landslide?
The movement of rock, soil, and other earth materials down a slope.
What is a model?
Any representation of a system used to help one understand and communicate how it works.
What is a natural hazard?
A naturally occurring event that may negatively affect people and the environment.
What is an earthquake?
A sudden release of energy in Earth’s interior, which can cause shaking at the surface.
What is magma?
Hot, liquid rock under Earth’s surface.
What is a volcano?
An opening in Earth’s surface through which lava, gas, and ash escape from magma underground.
What is igneous rock?
Rock that forms when magma or lava cools and solidifies.
What is lava?
Hot, liquid rock on Earth’s surface.
What is a system?
A group of interacting objects or processes.
What is magnitude in relation to earthquakes?
The size/strength of an earthquake.
What is GPS?
Global Positioning System. A network of satellites around Earth that communicate with GPS receivers on the ground.
What is the asthenosphere?
The weak, soft solid layer of the mantle 100-250 km below Earth’s surface.
What is the lithosphere?
The solid layer of Earth’s crust and upper mantle.
What are lithospheric plates?
Sections of Earth’s lithosphere.
What are plate boundaries?
Areas where two or more of Earth’s lithospheric plates are in constant motion.
What is a plate?
A section of lithosphere.
