LT: I am learning how convection current works. The purpose is
to identify how particle movement affects the mantle. Today I will
learn how convection current cycles within the mantle. Warm-up:
What is an example of convection currents happening in your life?
CW: Use notes and demo to explain how the mantle flows. HW:
Complete How the mantle flows descriptive writing page. Language
Goal! I can use the vocabulary words mantle, core, crust, density,
lithosphere, oceanic crust, continental crust, and convection
current when describing the mantle movement.
Slide 2
O Lithosphere: The outer part of the earth, consisting of the
crust and upper mantle, approximately 62 mi. thick. The solid
portion of the earth.
Slide 3
O Asthenosphere: The upper part of the Earth's mantle,
extending from a depth of about 46.5 mi to about 124 mi. The
asthenosphere lies beneath the lithosphere and consists of
partially molten rock
Slide 4
Correct questions from reading 1.2 O The movement of energy
from a warmer object to a cooler object is called? The movement of
energy from a warmer object to a cooler object is called heat
transfer. O What is convection? Convection is heat transfer by the
movement of currents within a fluid these heated particles of fluid
begin to flow transferring heat from one part of the fluid to
another. O Heat transfer by convection is caused by differences of
? and density within a fluid. Heat transfer by convection is caused
by differences of temperature and density within a fluid. O A
measure of how much mass there is in a volume of a substance is?
Density is a measure of how much mass there is in a volume of a
substance.
Slide 5
Correct questions from reading 1.2 O Circle the letter of the
sentence that describes what happens to a fluid when its
temperature increases. a. Its particles occupy less space. b. Its
density decreases. c. Its particles move more slowly. d. Its
particles settle together more closely. When temperatures increases
in a fluid the particles density decreases. O What three factors
set convection currents in motion? The three factors that set
convection current into motion are the 1) heating and cooling of
liquid, 2) the changing of fluids density and 3) the force of
gravity. O What happens to convection currents when the liquid or
gas is no longer heated? When liquid or gas are no longer heated in
convection current the flow will stop and the current will
eventually disappear.
Slide 6
Before we go on what is density? The amount of particles within
a given space/ amount of volume.
Slide 7
This particle arrangement is more dense or less dense?
MORE
Slide 8
This particle arrangement is more dense or less dense?
LESS
Slide 9
This particle arrangement is dense increasing or decreasing?
increasing
Slide 10
This particle arrangement is dense increasing or decreasing?
decreasing
Slide 11
8. Complete the graphic organizer to show the relationships
among heat, movement, and density in mantle rock. A. Particles
occupy less space. B. Particles move less and density increases. C.
Particles occupy more space. D. Mantle rock is being heated. E.
Particles move more and density decreases.
Slide 12
Correct questions from reading 1.2 O Why is convection current
within the mantle shown as a cycle? Convection current within the
mantle is shown as a cycle because the flow of hot magma rises and
once cooled this magma sinks and the process starts all over again
due to the heat of the outer core. O Is the following sentence true
or false? Explain your reasoning to support your answer. O The heat
source for the convection currents in the mantle is the sun.
Slide 13
Convection Current O A convection current is the flow that
transfers heat within a fluid. Convection currents are located in
the asthenosphere in boiling water and lots of other places..
Slide 14
Vocabulary words you should know O Plate Boundaries O Plate
Tectonics O Earthquake O Volcano O Continental Crust O Oceanic
Crust O Mantle O Inner Core O Outer Core O Lithosphere O
Asthenosphere
Slide 15
HW: write a clear description of How the Mantle Flows. You
should use as many words from the word bank. Your writing should be
organized, chronological and neat. Any questions?
Slide 16
LT: I am learning how convection current works. The purpose is
to identify how particle movement affects our lives. Today I will
learn how convection current cycles. Warm-up: Describe the atoms
within the demonstration by using a science sentence. (Beginning,
middle, and end) CW: How does a lava lamp flow? HW: Complete the
Sematic Feature Analysis of the mantle and a lava lamp sheet.
Language Goal! I can use the vocabulary words mantle, core, crust,
and convection current when connecting the earth to a lava lamp.
Concept Goal!!! I can use particle movement words increase density,
decrease density, expands, contracts, increase energy, decrease
energy, cools down and heats up.
Slide 17
Slide 18
Slide 19
Slide 20
Slide 21
Slide 22
How does a lava lamp work? Write down the different parts of
the lava lamp you see Think: What causes the Mantle - lava to cycle
within the earth, within a lava lamp? On your lava lamp paper
create and explain the convection current flow of solutions.
Slide 23
Use the following partial arrangement descriptions to describe
your lava lamp. Greater distance between partials Reduced distance
between partials Rises goes up Sinks- goes down Density increases
Density decreases Occupies more space Occupies less space Increases
energy Decreases energy Heats up Cools down Has gravitational force
Closest to a heat source Furthest from a heat source
Slide 24
Assignment: Complete the Semantic Feature Analysis of the
mantle and a lava lamp. If you have a question on a row just place
a ? question mark there and we will discuss it tomorrow. Please do
not guess .. If you do not know we will work on it tomorrow. We
need to understand how and why!!!
Slide 25
Directions: Complete the matrix by using an X within the rows
of features that apply to each concept. Concepts of particle
arrangement, mantle and lava lamp positions are found on the left.
Greater distance between particles Reduced distance between
particles Rises - goes up Sinks - goes down Density increases
Density decreases Occupies more space Occupies less space Increases
energy Decreases energy Heats up Cools down Has gravitational force
Closest to a heat source Furthest from a heat source When particles
occupy little space When particles occupy more space When particles
move real fast When particles move real slow At the top of the
mantle At the bottom of the mantle At the top of a lava lamp At the
bottom of a lava lamp Convection Current is..
Slide 26
LT: I am learning how convection current works. The purpose is
to identify how particle movement affects our lives. Today I will
synthesize how convection current affects the lithosphere. Warm-up:
What are the forces you remember applying to your milky way bar?..
CW: Lithosphere and convection current HW: complete writing
Language Goal! I can use the vocabulary words mantle, core, crust,
and convection current when connecting the earth to a lava lamp.
Concept Goal!!! I can use particle movement words increase density,
decrease density, expands, contracts, increase energy, decrease
energy, cools down and heats up.
Slide 27
The lithosphere and convection current. Why do particles space
out? Why do particles come close together? Why do particles rise?
Why do particles sink? Where is the most energy? Where is the least
energy? What does energy do to atoms?
Slide 28
The lithosphere and convection current. Hot Chocolate Mantle
Convection Demonstration What is the hot chocolate? How did the hot
chocolate change? What caused the hot chocolate to move?
Slide 29
Assessment writing Write an explanation of how the lava lamp
and Earth layers are similar. Explain what the convection current
is and how convection current affects the lithosphere. These
answers should be very detailed and clear and come up with as many
comparisons as possible. You can also include ways that the two are
different. Mantle Outer Core Lithosphere Particles Continental
Crust Oceanic Crust Gravity Flow Convection current Density
increases Sink Rise Density decreases Asthenosphere Temperature
Heating and cooling More space Less space Increase Energy Decrease
energy Density decreases Density increases Particles occupy less
space Particles occupy more space Gravitational force Closest to a
energy source Farther from a energy source