Download The Rock Cycle - WNMS8thScience

Quiz Answers
AB–
CDEFG-
Crust
Upper Mantle
Asthenosphere
Lower Mantle
Outer Core
Inner Core
Lithosphere
Layers of the Earth
Earth’s Layers–Radius 6,400km
 Crust (15km)–we live on, cool, brittle
 Upper Mantle (410km) – holds crust, contains
a thin, hot magma layer
Lithosphere (0-410km)
 Asthenosphere (410-660km) Soft weak zone
where rock is more fluid due to temp. and press.
 Lower Mantle (2900km) –MOST of Earth’s
interior, very hot and slow flowing
 Outer Core (5,100km) – liquid, made of metal
 Inner Core (6,400km) – solid, made of metal,
hot
Waves
 Seismic waves – vibrations that travel
through the Earth’s interior
 Two most prominent:
 P-Waves
 S-Waves
P-Waves
 Primary
 Powerful (move through solid and
liquid)
 Faster
 Forward and backward motion
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Picture thanks to usgs.gov
S-Waves
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Secondary
Solid – cannot move through liquid
Side-to-side motion
Slower
Shadow zone – told us that the
Earth’s interior is liquid
Today’s Assignment
 Read pages 226 – 228
 Answer Questions 1 – 10 in your
notes
 Can work in groups if you can handle
it.
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QUIZ on Wednesday 10/27/2010 over
Earth’s Interior
Convection (turn to page 236)
 Convection – is the transfer of heat
 Heat rises
 The heat rises from the center of the
Earth and moves the plates that rest on
the mantle
Density
 Density – heaviness
of an object with
volume
 Continental crust –
floats higher, so is
less dense
 Oceanic Crust –
floats lower, so
more dense
Read Chapter 10.3
(You Do NOT have to complete questions
at the end of the section)
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Draw and Label a Diagram of Earth’s Layers
Define a seismic wave.
What is the difference between P and S waves?
What is the shadow zone?
What does the S-wave shadow zone tell us about the
interior of Earth?
Name the type of Rock that makes up the ocean floor.
Name the two kinds of rock that make up the
continents.
What is convection?
What is the continental crust?
What is the oceanic crust?