Ivack 6th Chapter 6

a stress force that SQUEEZES the crust

a stress force that pushes a mass of rock in two opposite directions

compression results in a ____________ fault

shearing results in a ____________ fault

tension results in a ___________ fault

a large area of elevated land

shaking and trembling that that is caused by movement or rock beneath Earth's surface

point of the surface directly above the focus

a fold in rock that folds downward to form a valley

a stress force that PULLS on the crust

a stress force that SQUEEZES the crust

a stress force that pushes a mass of rock in two opposite directions

tension results in a ___________ fault

a large area of elevated land

shaking and trembling that that is caused by movement or rock beneath Earth's surface

the area BENEATH the Earth's surface where the rock is under stress and triggers an earthquake

a fold in a rock that folds in an upward Arch

point of the surface directly above the focus

a force that acts on rock to change its shape or volume

in a normal fault the hanging wall slips (up/down)

in a reverse fault the hanging wall slips (up/down)

____________ stretches the rock and makes it thinner

____________ makes folds and makes the rock shorter

____________ is a type of stress that can cause the rock to slip apart or change shape

the first waves to come are (P,S, surface) waves

the second waves to come are (P,S, surface) waves

the last waves to come are (P,S, surface) waves

(P,S, surface) waves move the fastest

(P,S, surface) waves move like a slinky

(P,S, surface) waves make the biggest lines on a seismograph

the ____________ scale measures an earthquake's damage

the number geologists assign to an earthquake based on its size

this scale is best for measuring ALL types of earthquakes

an instrument that recordes and measures seismeic waves

this instrument uses a weight, wire, and anchor post to measure fault movement

this meter is like a carpenter's level

this instrument uses satellites and receivers to mesure fault movement

when there is more friction along a fault, earthquakes are (more, less) likely to occur

water displaced by an earthquake that forms a large wave

an earthquake that occurs after an earthquake

turns loose soil into liquid mud

reduces the amount of energy that reaches the building by using pads and springs