point on Earth's surface directly above the focus of an Earthquake
What is epicenter?
300
Rocks grind against each other as they move horizontally past each other in opposite directions. Pressure builds up along the fault until the rocks break.
What are faults at sliding boundaries?
300
mountains that form along fault lines where blocks of rock fall, are thrust up, or slide
What are fault-block mountains?
400
idea that giant plates of rock are moving slowly across Earth's surface
What is plate tectonics?
400
Plates that consist almost entirely of dense ocean-floor material
What is oceanic plates?
400
point underground where the faulting in an earthquake occurs
What is focus?
400
Zone that borders the Pacific Ocean and is famous for its many volcanoes
What is the Ring of Fire?
400
Volcanic mountains that can also be shaped by erosion
What are dome mountains?
500
area where Earth's solid upper mantle and crust combine to form a shell
What is the lithosphere?
500
Plates that are made up of lighter continental rock 'riding' on top of denser rock
What is continental plates?
500
waves of energy sent through Earth's crust when plates move
What are seismic waves?
500
Type of volcano that forms when a lot of lava flows smoothly from a vent and spreads out to cover a wide area. This action creates a broad, low, dome-shaped volcano.