2. P-waves speed up again through the inner core and
S-waves also travel through it
, suggesting that the inner core is composed of solid iron and nickel. 3.
What can seismic waves not travel through?
S-waves cannot travel through
liquids
. When they reach the surface they cause horizontal shaking. Liquids don’t have any shear strength and so a shear wave cannot propagate through a liquid. Think of a solid material, like a rock.
Do seismic waves travel through Earth’s interior?
Seismologists study shock, or seismic, waves as
they travel through the Earth’s interior
.
Which waves can penetrate the inner core?
P waves
penetrate the core.
Which seismic wave can penetrate core but refracts?
10. Which seismic wave can penetrate the core but refracts?
P waves
also refracts but is able to penetrate the core.
What happens when seismic waves reach the core of the earth?
Figure 19.2a: P-waves generally bend outward as they travel through the mantle due to the increased density of mantle rocks with depth. When P-waves strike the outer core, however,
they bend downward
when traveling through the outer core and bend again when they leave.
How are seismic waves used to study the Earth’s interior?
By measuring the time it takes for seismic waves to travel along many different paths through the earth, we can figure out the velocity structure of the earth
. Abrupt changes in velocity with depth correspond to boundaries between different layers of the Earth composed of different materials.
Which seismic wave will not pass through outer core?
S waves
cannot pass through the liquid outer core, but P waves can. The waves are refracted as they travel through the Earth due to a change in density of the medium. This causes the waves to travel in curved paths.
What can seismic waves travel through?
P waves can travel through
solids, liquids and gases
. That’s one big difference between them and the other types of seismic waves, which typically travel only through solids (such as rock).
Can seismic waves travel through liquid?
Seismic waves are the energy from earthquakes. Seismic waves move outward in all directions away from their source. Each type of seismic wave travels at different speeds in different materials. All seismic waves travel through rock, but
not all travel through liquid or gas
.
Which seismic wave can travel only to the mantle but not on the outer core?
P waves can travel through Earth’s outer core, but
S waves
cannot. Because of this, scientists know 16. Scientists use the properties of seismic waves to figure out the structure of Earth’s interior.
Which seismic wave Cannot penetrate core?
The seismic waves that get refracted and cannot pass through the core of the Earth are:
S-waves
.
What is not true about seismic waves?
What is NOT true about seismic waves?
The material within the wave moves long distances along with the wave
. Which of the following would NOT be a good idea in an area that has a high risk for earthquakes? Which of the following places did NOT experience a major earthquake?
Is the inner core solid or liquid?
However, unlike the outer core,
the inner core is not liquid or even molten
. The inner core’s intense pressure—the entire rest of the planet and its atmosphere—prevents the iron from melting. The pressure and density are simply too great for the iron atoms to move into a liquid state.
Which of the seismic waves can penetrate the outer?
The
p waves
are the most powerful and penetrating. The s waves are like ocean waves. The s (secondary) waves are up and down and side to side.
What seismic waves stay on surface?
S waves are called secondary waves because they always arrive after P waves at seismic recording stations. Unlike P waves, S waves can travel only through solid materials. After both P and S waves have moved through the body of Earth, they are followed by
surface waves
, which travel along Earth’s surface.
When seismic waves travel through the interior of the Earth and encounter boundaries between layers of different densities?
When seismic waves encounter a rock of a different density,
it may reflect off of that layer, or bend as it travels across the boundary
. By noting these patterns of reflection and refraction, one can determine the presence and depth of layers within Earth.
How is outer core different from the inner core?
The inner core and the outer core are made up of similar stuff chemically (both are made mostly of iron, with a little nickel and some other chemical elements)–the difference between them is that
the outer core is liquid and the inner core is solid
.
How are seismic waves used to determine the position and thickness of Earth’s interior layers?
The earth’s major layers formed because ________. How are seismic waves used to determine the position and thickness of Earth’s interior layers? A.
Dense rock layers will allow seismic waves to pass straight through them
.
What happens to seismic waves that pass through the outer core?
What happens to seismic waves that pass through the outer core?
S-waves are bent around the outer core
. When the earth’s interior composition becomes more dense, does a seismic waves traveling through increase or decrease in velocity? Increase.
