The ratio between a distance on a map and its actual distance.
What is map scale?
A type of stress that pulls rocks apart in opposite directions.
What is tension?
From the Latin for fire, it refers to the rocks that result from the cooling and hardening of lava.
What is igneous?
A large, inland body of water with no direct connection to the ocean.
What is a lake?
Formulated the geocentric theory.
Who is Ptolemy?
This is another name for a line of longitude. There is a grand one.
What is a meridian?
The two types of waves that move through the earth's crust.
What are primary and secondary waves? (P or S waves)
This is heat harnessed from the earth's interior.
What is geothermal energy?
A broad, sweeping curve of a river with a low-elevation profile.
What is a meander?
These planets are made of rock materials and roughly the size of the earth.
What are terrestrial planets?
Horizontal lines that range from 0o to 90o north or south.
What are lines of latitude?
The measurement of the size of an earthquake.
What is its magnitude?
An opening in the earth's crust where lava, pyroclastic material, and gases erupt from underground magma chambers.
What is a vent?
A graph that shows the change in a stream bed's elevation.
What is an elevation profile?
This astronomer developed a mathematical model of the heliocentric theory.
Who was Nicolaus Copernicus?
The boundary between the crust and the mantle.
What is the Moho?
The largest recorded earthquake occurred in this country.
What is Chile?
Massive, broad mountains with gentle sloping sides built from successive eruptions of high-viscosity, low density lava.
What is a shield volcano?
All of the streams and tributaries that deposit water in the same watershed.
What is a stream system?
A small piece of rock debris traveling through outer space.
What is a meteoroid?
A material or substance that occurs in nature and is used by living beings.
What is a natural resource?
This scale measures the strength of an earthquake.
What is the Richter scale?
No known eruptions with little chance of a future eruption as there is no active magma supply.
What are extinct volcanos?
The study of inland aquatic ecosystems. Originated with Francoise-Alphonse Forel.
What is limnology?
The motion of a planet that involves moving in an orbit around the sun.
What is a revolution?