1.
2.
3.
4.
5.
Why is it difficult to determine
Earth’s interior structure?
What causes seismic waves?
How are seismic waves used to
provide evidence about Earth’s
interior?
How do temperature and pressure
change as you go deeper into Earth?
What is the difference between the
outer core and the inner core?
S6E5e Recognize that lithospheric plates
consistently move and cause major
geological events on the Earth’s surface.
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Convection
Conduction
Radiation
Density
Convection Current
1.
2.
3.
How does heat from the sun travel
to Earth?
How does heat from a cup of hot
chocolate make the spoon hot?
How does heat from a stove top
make the entire pan of soup hot?


Radiation: heat is transferred
through empty space.
There is no direct contact
between the heat source and
an object.
Example: Sunlight warming the
earth’s surface.
Can you think of other examples?
NB 47 Draw and label a picture
that reminds you of heat
transfer by radiation.

Conduction: When heat is
transferred by direct contact.

The heat is transferred when
you touch it!
Example: you touch a hot pan
and get burned
Can you think of other
examples?
NB 47 Draw and label a picture
that reminds you of heat
transfer by conduction.


Convection: the transfer of heat by
the movement of a heated fluid or
gas
As the fluid or gas heats, the
molecules spread out and become
less dense. Then they move
upwards, over the cooler fluid.
Then as it cools, it becomes more
dense and sinks.
Example: heating a pot of soup
Can you think of other examples?
NB 47 Draw and label a picture that
reminds you of convection.

http://www.teachersdomain.org/resource/lsp
s07.sci.phys.energy.heattransfer/
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When something is heated, does it become
more dense or less dense?
Record your hypothesis:
If the air in a balloon is heated
Then the air will become (more or less)
dense.
Record your observations.
Conclusion: Do the results support your
hypothesis? Yes or No
Summarize what you learned in one
sentence.
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

http://education.sdsc.edu/optiputer/flash/
convection.htm
These currents are the forces that drive
plate tectonics.
Act it out (quietly): The floor is the hot
outer core of the Earth. You are hot rock in
the mantle. Hot rock rises because it is less
dense, then it cools and becomes more
dense, and then it sinks.
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The cycle of heating, cooling, and sinking repeats over and
over and over and over and over and over.
This causes convection currents. The heat from the core
causes convection currents in the mantle.
Isn’t that neat!!!
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http://safarivideo/SAFARI/montage/play.php
?keyindex=1660
While listening answer questions on the video
quiz. Use your own paper. NB 46
Self-check
Paper Clip
Start Time
Drop Time
Total Time
#1
#2
#3
#4
#5
#6
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Record your hypothesis. If…, Then…
Record your observations.
Conclusion: Do the results support your hypothesis? Yes or
No
How did the heat move from the candle to the paperclips?
Summarize what you learned in one sentence.
1.
2.
3.
4.
5.
What are the three types of heat transfer?
What causes convection currents in the
mantle?
Draw and label a convection current. Use
arrows to show the direction the material
is moving.
Describe in your own words how
convection currents form, use the terms
less dense and more dense in your
description.
What causes convection currents in the
mantle?