Which type of seismic wave will reach a seismograph first?
P wave
What are the seismic waves they arrive at the seismograph first and move the ground side to side?
P-wave:the primary body wave; the first seismic wave detected by seismographs; able to move through both liquid and solid rock. S Wave—secondary body waves that oscillate the ground perpendicular to the direction of wave travel. They travel about 1.7 times slower than P waves.
What is the first seismic wave to reach a location?
P waves
What kind of wave has a push-pull motion?
P waves, also called primary waves, are compressional waves that arrive at distant locations first and have a push-pull type motion. S waves, also known as secondary waves, are shear waves that arrive after P waves and have a side-to-side motion.
Which is faster S or P-waves?
P-waves travel 60% faster than S-waves on average because the interior of the Earth does not react the same way to both of them. P-waves are compression waves that apply a force in the direction of propagation. The energy is thus less easily transmitted through the medium, and S-waves are slower.
Which of the body waves travel the fastest slowest?
Body waves travel through the body of a planet. Surface waves travel along the surface. There are two types of body waves: P-waves travel fastest and through solids, liquids, and gases; S-waves only travel through solids. Surface waves are the slowest, but they do the most damage in an earthquake.
What are two characteristics of P waves?
Although liquids and gases have zero rigidity, they have compressibility, which enables them to transmit P-waves. Sound waves are P-waves moving through the air….P-Waves.
| P-waves travel through materials with rigidity and/or compressiblity, and density | |
|---|---|
| greater compressibility | faster P-waves |
| greater density | slower P-waves |
What is true P wave?
P waves, or Primary waves, are the first waves to arrive at a seismograph. P waves are the fastest seismic waves and can move through solid, liquid, or gas. They leave behind a trail of compressions and rarefactions on the medium they move through. P waves are also called pressure waves for this reason.
What happen when seismic waves travel deeper into the crust?
Answer. Answer: Seismic stations located at increasing distances from the earthquake epicenter will record seismic waves that have traveled through increasing depths in the Earth. Molten areas within the Earth slow down P waves and stop S waves because their shearing motion cannot be transmitted through a liquid.
How do seismic waves move?
Explain that earthquake waves move particles of material in different ways: whereas, compressional waves create a back and forth motion parallel to the direction of the waves, shear waves create a back and forth motion perpendicular to the direction of the waves.
Why do seismic waves speed up as they travel deeper into the crust?
Because the earth’s mantle becomes more rigid and compressible as the depth below the asthenosphere increases, P-waves travel faster as they go deeper in the mantle. The density of the mantle also increases with depth below the asthenosphere. The higher density reduces the speed of seismic waves.
When seismic waves slow down what does it indicate?
Low Velocity Zone Furthermore, while both the P and S waves travel more slowly, the S waves are attenuated or weakened. This is interpreted to be a zone that is partially molten, probably one percent or less (i.e., greater than 99 percent solid).
What are the two major types of seismic waves?
There are two broad classes of seismic waves: body waves and surface waves. Body waves travel within the body of Earth.
What happened to the P waves when they are approaching?
What happens to the P-waves when they are approaching the molten part of earth’s interior? P waves are slower than S waves. …
What waves travel fastest in a vacuum?
light waves
What electromagnetic wave has the most energy?
Gamma rays
How do you know which wave has the highest energy?
Gamma rays have the highest energies, the shortest wavelengths, and the highest frequencies. Radio waves, on the other hand, have the lowest energies, longest wavelengths, and lowest frequencies of any type of EM radiation.
What increases the energy of a wave?
The higher the amplitude, the higher the energy. To summarise, waves carry energy. The amount of energy they carry is related to their frequency and their amplitude. The higher the frequency, the more energy, and the higher the amplitude, the more energy.
At what speed do all electromagnetic wave travels in vacuum?
Electromagnetic radiation is a type of energy that is commonly known as light. Generally speaking, we say that light travels in waves, and all electromagnetic radiation travels at the same speed which is about 3.0 * 108 meters per second through a vacuum.