Download Earth`s Interior

Earth’s Interior
Chapter 4 Section1
• What is a geologist?
• Geologists are
scientists who study
the forces that make
and shape planet
earth.
• What is Geology?
• Geology- is the study
of planet Earth.
•What is geology video 1 min
• What are the • Geologists divide the forces
two types of
that change earth’s surface into
forces?
two forces:
• Constructive- builds land up
(mountains)
• Ex: earthquakes, volcanoes,
and deposition
• Destructive – wears away the
land.
• Ex: weathering
How far have scientist drilled
into the Earth?
7.6 miles
–Only 0.2% of the distance to the earth’s
core
• Deepest hole on earth: artificial hole in
Russia (kola superdeep borehole). Drilling
started in 1970, and ended 1989. It was
too hot to go on because the temperature
reached 570 degrees F.
• (oil drills only go a mile deep)
• How do we know • Geologist use the data
what the inside of
record from seismic waves
the Earth is made
created by earthquakes.
out of?
They study how they travel
through earth and predict
what the interior of Earth is
made of.
• Seismic waves video
• Describe the
two types of
crust. What are
they made of?
Layers of the Earth
• Crust – The layer of rock
that forms earth’s outer skin.
Two Types of Crust
– Oceanic crust is mostly
made of Basalt rock.
– Continental crust –made
mostly of Granite.
Basalt
Granite
• Mantle
• Mantle (Middle Layer)
– No name layer– the solid
upper mantle. It is the tiny top
solid layer of magma.
– Asthenosphere – the molten
upper mantle and is made of
molten magma. (tar or
pudding like)
– Lower mantle- made of hot
solid magma. (iron and
magnesium)
• What two
• The lithosphere is a solid layer
layers does the
made of the crust and upper
lithosphere
part of mantle.
consist of.
Lithosphere
video clip
Solid
Solid
No name layer
Solid
Molten
Solid
• Describe the • Core
two layers of
Two Layers of the core
the core.
– Outer core is a layer of molten
metal
• The_Inner_Core
video
• The core video.asf
– Inner core is a dense ball of
solid metal. The metal is made
of iron and nickel.
Fill in the chart
Lithosphere
Main
Layer
Sub-layer
Crust
Oceanic Crust
Continental
Crust
No name layer
Mantle
Asthenosphere
Lower Mantle
Core
Outer Core
Inner Core
Solid or
molten
What is the
layer made
of?
Layers of the Earth
G
.
E.
D
.
C.
B
.
A
.
F
.
A.Inner Core = Solid
Metal
B.Outer Core = Molten
Metal
C.Mantle = Solid Magma
D.Asthenosphere =
Molten Magma
E. Lithosphere = Solid
Crust and Magma
F.Continental Crust =
Solid granite rock
G.Oceanic Crust = Solid
Basalt Rock
Practice Quiz Question
• Can you label the following
layers? (review clip) review clip 2