Mr. Ochoa 6th grade teacher

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Plate TectonicsEarths Interior

• Chapter 4
• Unit 2
• Mr. Ochoa 6th grade teacher

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Objective and Starter

• Objective you will learn about Earths inner
  structures Earths crust, mantle, and core.
• Starter What do you know about the Earths Inner
  core?

Know What I want to Know What I learned
It is hot Made of Iron Different temperatures Many different layers How hot is it in the center of the core ? How big is it? How fast things go?
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Objective and Starter

• Objective you will learn about Earths inner
  structures Earths crust, mantle, and core.
• Starter What do you know about the Earths Inner
  core? (1 paragraph)

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Seismic Waves

• They are produced after an earthquake scientists
  study them to see how they traveled through earth.

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Crust Mantle

• The layer of rock that forms Earths outer skin.

A layer of hot and solid rock 40 kilometers
below the Earths surface.
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Lithosphere Asthenosphere

• The Uppermost part of the mantle and the crust.

A part of the mantle just below the lithosphere.
A some what soft layer that can bend.
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Outer Core Inner Core

• A layer on molten metal that surrounds the inner
  core.

A dense ball of solid metal.
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Background Information

• Have you ever dug a hole in the ground? If you
  dig down deep enough what do you hit? What else
  do you think is below the rock?

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Turn to page 132
Find the 4 most important things in that section
on the poster
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Complete the questions on Page 139

• Numbers 1-2 in the big Science book
• Pages 69-73 in the Note book guide Use pages
  132-139

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Lesson Review

• Turn to page

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Convection and the MantleChapter 4 section 2

• Mr. Ochoa
• 6th grade teacher

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Objective and Starter

• Objective You will learn about convection
  currents and heat is transferred.
• Starter What are seismic waves? How are they
  related to earthquakes?

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Objective and Starter

• Objective You will learn about convection
  currents and heat is transferred.
• Starter What are seismic waves? How are they
  related to earthquakes?

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Background Information

• In a room at your home, why is it colder near the
  floor than near the ceiling?

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Radiation

• The transfer of energy through space.

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Conduction

• Heat transfer within a material or between
  materials that are touching.

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Convection

• Heat transfer by the movement of currents within
  a fluid.

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Density

• A measure of how much mass there is in a volume
  of a substance

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Convection Current

• The flow of transfers heat within a fluid.

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Lesson Review

• Turn to page

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Turn to page
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Drifting ContinentsChapter 4 Section 3

• Mr. Ochoa
• 6th grade teacher

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Objective and Starter

• Objective You will learn about the Pangaea
  theory.
• Starter What do you know about the continents?

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Background Information

• What is a continent? Can you name them? Have they
  always been in the same place?

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Continental Drift

• A theory that continents slowly moved apart over
  Earths surface.

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Pangaea

• Alfred Wegener proposed that all continents were
  joined together at one point in history.

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Fossil

• Any trace of an ancient organism that has been
  preserved in rock.

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Turn to page
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Lesson Review

• Turn to page

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Sea Floor SpreadingChapter 4 Section 4

• Mr. Ochoa
• 6th grade teacher

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Objective and Starter

• Objective You will learn about sea floor
  spreading.
• Starter How do continents move? What is theory
  that the continents were once formed as one?

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Background Information

• Where does magma from Earths interior flow out
  onto the surface? What happens with the lava
  after it goes onto the surface?

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Mid-Ocean Ridge

• An undersea mountain range.

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Sonar

• A device that bounces sound waves off underwater
  objects and then records the echoes of these
  sound waves.

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Sea Floor Spreading

• The sea floor spreads apart along both sides of a
  mid ocean ridge and new crust is added.

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Deep Ocean Trench

• Deep underwater canyons

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Subduction

• The process by which the ocean floor sinks
  beneath a deep ocean trench and back into the
  mantle.

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Lesson Review

• Turn to page

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Turn to page
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Plate Tectonics TheoryChapter 4 Section 5

• Mr. Ochoa
• 6th grade Teacher

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Objective and Starter

• Objective You will learn about the theory of
  plate tectonics.
• Starter- What is sea floor spreading? What are
  Deep Ocean Trenches?

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Background Information

• What is a plate?

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Plate

• Cracks in the continent that fit along crack in
  the lithosphere.

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Plate Tectonics

• A theory that pieces of Earths lithosphere are
  in slow, constant motion, driven by convection
  currents in the mantle.

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Fault

• Breaks in Earth's crust where rocks have slipped
  past each other.

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Spreading Boundary

• The place where two plates move apart.

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Rift Valley

• A deep valley that forms after spreading
  boundaries develops on land.

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Colliding Boundary

• The place where two plates come together or
  collide.
• Sliding Boundary
• A place where two plates slip past each other,
  moving in opposite directions.

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Turn to page
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Lesson Review

• Turn to page

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Chapter 4 Review

• Turn to page 164
• Complete questions

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