
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN: 9780134746241
Author: Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher: PEARSON
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Question
I need help with questions 1 and 2 please and please answer qickkkkk

Transcribed Image Text:increased greenhouse gas concentrations.
Shadow Zones
No de
Madow o
platus
Used
opter
SORTINGSTOYALTK
Bold
inner cons
Uanta
Crust
S-saves
Pand S-ves
P-wave
shadow zone
100
Ilouse human evergy is the cas
ergy Use lec
Se direct
Punits
P- and waves
Shadow zone
Pwives
received here
reved
Shadow 20
Due to REFRACTION, one can get a detailed
'visual' of the internal layers of the Earth, much like
that of an ultrasound to see a babyl
The shadow zone of the S-wave and the P-wave
provide the boundaries for calculating the size of
the outer core. The time of the arrival of P-waves
provide the density. The lack of S-waves provides
the evidence the outer core is a liquid.
The image above shows how P waves and S waves travel through the earth. Use this image and your
knowledge of seismic waves to answer the following questions.
1. How do we know that the Earth not made of one solid lump of rock, but instead has layers inside?
2. As you get closer to the core, the density of the Earth increases. How will the speed of P waves
change as you get closer to the core?
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