Table of Contents
What do we call the waves that squeeze and stretch the rock?
· Primary (P) waves – type of seismic wave that vibrates rock back and forth. Squeeze & stretch rock.
Do P waves squeeze and release rocks?
P-waves squeeze and release rocks as they travel. The material returns to its original size and shape after the P-wave goes by. For this reason, P-waves are not the most damaging earthquake waves. P-waves travel through solids, liquids, and gases.
What type of seismic wave squeezes and stretches the ground?
Primary Waves
Primary Waves (P-waves) Primary waves go 7~8 kilometers per second in solids, but primary waves have different speeds in liquids and gases. The ground moves back and forth in the same direction as the primary waves move. Primary waves repeat squeezing and stretching the ground when they move.
What is a systematic wave?
A seismic wave is a wave that travels through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. There are two kinds of body waves: primary (P-waves) and secondary (S-waves). Surface waves are analogous to water waves and travel just under the Earth’s surface.
What is systemic wave?
A seismic wave is a wave that travels through the Earth, most often as the result of a tectonic earthquake, sometimes from an explosion. There are two types of seismic wave, namely, ‘body wave’ and ‘surface wave’. There are two kinds of body waves: primary (P-waves) and secondary (S-waves).
Which is type of stress squeezes rock until it folds or breaks?
Tension pulls on the crust, stretching rock so that it becomes thinner in the middle. Compression squeezes rock until it folds or breaks. Shearing pushes a mass of rock in two opposite directions. motion push or pull the crust so much that the crust breaks.
The type of strain (deformation) that develops in a rock depends on the tectonic force. (a) Compressive forces squeeze and shorten a body. (b) Tensional forces stretch a body and pulls it apart
What causes the stretching and thinning of rocks?
Compressive forces are common along convergent plate boundaries resulting in mountain ranges. (b) Fig. 10.6b: Tensional forces cause stretching and thinning of the rocks, usually accompanied by tensional faults. Tensional forces common along extensional plate boundaries such as mid-ocean ridges.
What happens to a rock as the force increases?
As the force is gradually increased, little change occurs in the rock until suddenly it fractures. 3. In ductile deformation, a gradually increasing force will cause the rock to undergo smooth and continuous plastic deformation. The rock will contort and change shape without fracturing. 4. The type of rock also determines the type of deformation.