Earthquakes and Faults

These forces push on rock in opposite, but not directly opposite, horizontal directions...similar to the way the blades of a scissors push in opposite directions on a piece of paper.

• tension forces

• shear forces

• compression forces

• all of the above

Forces that pull rocks apart

• tension forces

• shear forces

• compression forces

• all of the above

Forces that squeeze rock together.

• tension forces

• shear forces

• compression forces

• all of the above

At these, rock above the fault moves downward in relation to the rock below the fault surface.

• strike-slip fault

• reverse fault

• normal fault

Tags

NGSS.MS-ESS2-2

These result from compression forces.

• strike-slip fault

• reverse fault

• normal fault

Tags

NGSS.MS-ESS2-2

Rocks on either side of this type of fault move past each other without much upward or downward movement.

• strike-slip fault

• normal fault

• reverse fault

_______________________ are the slowest of the seismic waves, but cause the most destruction

• primary waves

• secondary waves

• surface waves

• longitudinal waves

• transverse waves

Tags

NGSS.MS-PS4-2

__________________________ are the fastest of the seismic waves.

• primary waves

• secondary waves

• surface waves

• longitudinal waves

• transverse waves

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

Mechanical wave type where the particles move back and forth in the same direction that the wave is travelling.

• primary waves

• secondary waves

• surface waves

• longitudinal waves

• transverse waves

Mechanical wave type where the particles move perpendicular to the direction that the wave is travelling.

• primary waves

• secondary waves

• surface waves

• longitudinal waves

• transverse waves