Respuesta :
Answer 1:
Seismic waves change speed and direction when they encounter different materials: True
Explanation:
When a rock suddenly breaks withing the earth or there is an explosion, it releases vibrations that flow across the earth as waves. These waves are called Seismic waves. The change in speed and direction of the waves as they encounter different materials is called refraction.
Answer 2:
P-waves travel through Earth's mantle: True
Explanation:
Another name for a P-wave is Primary Wave. They are a type of seismic wave and are known to be faster in the speed of travel than other types of seismic waves. They travel through the earth's mantle in compressional and extensional forms. They have the ability to alter the volume of rocks through which they travel.
Answer 3:
S-waves do not travel through Earth's mantle: False
Explanation:
Also known as secondary waves, or shear waves, S-waves can travel through the objects. They occur after an earthquake and have the ability to forcefully dislocate or shake in a back and forth manner, the land that is perpendicular to its direction of travel.
Answer 4
Surface waves are the first to arrive at a seismic station: False
Explanation:
The first wave to arrive at a Seismographic station (which is an observatory for recording, and processing shockwaves, oscillations of the earth generated by earthquakes and other deep earth movements) is the Primary Wave or P-Wave.
Answer 5:
P-waves are bent when they strike the core: True
Explanation
The core of the earth comprises predominantly of Iron and Nickel. Because of the strength and structure of the core, the P-waves can still pass through but have their speed slowed very significantly and refracted.
Answer 6:
On seismograms, seismic waves recorded from more distant facilities are closer together than those recorded from facilities close to the epicenter.: False
Explanation
On seismograms, seismic waves recorded from more distant facilities are father than those recorded from facilities close to the epicenter.
P-waves are known to be faster than S-waves. The difference between the speed in both waves are known constants. Thus the farther the distance of the waves from the point of an earthquake or epicenter, the farther apart they are.
Answer 7:
S-waves do not enter the core because they cannot travel through solids: False
Answer 8:
Seismologists have reasoned that Earth's outer core must be liquid based on the disappearance of S-waves. True
Answer 9:
Studies of how waves reflect deep inside Earth show that Earth's inner core is solid. True
Answer 10:
The P-wave shadow zone does not receive direct P-waves: True
The following statements shows if they are true or false properties of the S and P waves
5. Seismic waves change speed and direction when they encounter different materials is a True statement
6. P-waves travel through Earth's mantle is a True statement
7.S-waves do not travel through Earth's mantle is a False statement
8. Surface waves are the first to arrive at a seismic station is a True statement.
9.P-waves are bent when they strike the core is a true statement
10. On seismograms, seismic waves recorded from more distant facilities are closer together than those recorded from facilities close to the epicenter is a False statement
11.S-waves do not enter the core because they cannot travel through solids is a False statement
12.Seismologists have reasoned that Earth's outer core must be liquid based on the disappearance of S-waves is a True statement
13.Studies of how waves reflect deep inside Earth show that Earth's inner core is solid is a True statement
14.The P-wave shadow zone does not receive direct P-waves is a True statement
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