Slide 1

Slide 2

Composition of Earth The Earths Layers

Slide 3

So far 1.I can list and identify the 3 types of rocks and explain how they are created 2.I can describe how the surface of the Earth is shaped by building up, weathering and erosion 3.I can identify the 3 layers of the Earth and their features 4.I can explain how and why plates move, the effects of their movement, and the difference between convergent, divergent, and transform plate boundaries 5.I can list and describe the three types of volcanoes 6.I can use evidence such as layers of fossils and sediments, current landforms, and tectonic movements as evidence of geologic processes that have changed the Earths surface

Slide 4

Bill Nye Earths Crust https://www.youtube.com/watch?v=QZkF7qy RaRo

Slide 5

4-23-14 Do Now Earths Layers Key Question: What is the earth made of? Initial Thoughts: 4 minutes

Slide 6

Evidence: Earth Foldable Follow the Make and Earths Layers Foldable Guide 1.Color the layers using the KEY on the Guide Inner Core red Outer Core red-orange Lower Mantle orange Middle Mantle Light Orange Upper Mantle yellow Oceanic crust dark brown Continental crust light brown Ocean - Blue

Slide 7

Foldable Directions: 2.Fill out the 4 Layer BOXES. pages 177 in the Sciencesaurus and pg 250 in the Red Earth Science book PowerPoint Earths Layers Composition: What its made of Thickness: in km State of matter: solid, liquid, plastic (a solid that behaves like a liquid) 3. Cut and paste the layers AND labels onto your 2 sheets of folded paper.

Slide 8

When youre done 4.Fold your foldable in half and paste it into your journal. 5.Paste in worksheets to your journal. 6.Answer the questions. 7.Complete the lesson DUE TOMORROW

Slide 9

The Layers of the Earth Copyright 2006. M. J. Krech. All rights reserved.

Slide 10

The Layers The Earth is composed of four different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you were able to go to the center of the Earth!

Slide 11

The Crust The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust).

Slide 12

The Crust The crust is composed of two rocks. The continental crust is mostly granite. The oceanic crust is basalt. Basalt is much denser than the granite. Because of this the less dense continents ride on the denser oceanic plates.

Slide 13

The Lithospheric Plates The crust of the Earth is broken into many pieces called plates. The plates "float" on the soft, semi- rigid asthenosphere.

Slide 14

The Mantle The Mantle is the Thickest layer of the Earth. The middle mantle is composed of very hot dense rock that flows like asphalt under a heavy weight. The movement of the middle mantle (asthenosphere) is the reason that the crustal plates of the Earth move.

Slide 15

The Lithosphere The crust and the upper layer of the mantle together make up a zone of rigid, brittle rock called the Lithosphere.

Slide 16

The Asthenosphere The asthenosphere is the semi- rigid part of the middle mantle that flows like hot asphalt under a heavy weight.

Slide 17

Convection Currents The middle mantle "flows" because of convection currents. Convection currents are caused by the very hot material at the deepest part of the mantle rising, then cooling and sinking again --repeating this cycle over and over.

Slide 18

Convection Currents The next time you heat anything like soup or water in a pan you can watch the convection currents move in the liquid. When the convection currents flow in the asthenosphere they also move the crust. The crust gets a free ride with these currents, like the cork in this illustration. Safety Caution: Dont get your face too close to the boiling water!

Slide 19

Slide 20

The Outer Core The core of the Earth is like a ball of very hot metals. The outer core is so hot that the metals in it are all in the liquid state. The outer core is composed of the melted metals of nickel and iron.

Slide 21

The Inner Core The inner core of the Earth has temperatures and pressures so great (4,000 degrees Celsius) that the metals are squeezed together and are not able to move about like a liquid, but are forced to vibrate in place like a solid.

Slide 22

Analysis Questions 1.What layers make up the lithosphere? 2.What layers are not completely solid? 3.What layer can you find the convection currents?

Slide 23

Summary What did you think about the earths composition before this lesson? What did you learn about the earths composition from this lesson? (Minimum of 3 sentences!!!) What are some further thoughts or questions you have about the earths composition?

Slide 24

Reflection Free Choice

Slide 25

Big Idea The Earth is made up of the crust, the mantle, and the core.

Slide 26

4-21-14 Do Now Add the bottom lesson to your grades page: DateLesson StampSection Check 4/1Rock Basics (stamped) 5/5 4/3Rock Cycle (stamped) 4/3Vocab 3/3 8/8 4/15Breaking it Down 4/17Erosion: Case Studies

Slide 27

4-22-14 Do Now Vocab Quiz Close your journal. This is not an open journal vocab quiz. Log on to skyward Find Vocab Quiz #1 Wait until I tell you to begin When done, get out your Bill Nye Video W.S. View todays Google doodle (there are 5 different ones

Slide 28

Happy Earth Day!

Slide 29

Vocab Look up the words in the red book and sciencesauraus glossaries. Cut & paste the definition to the correct vocab word. When done, work on the IMOW and sketches using: pages 177 in the Sciencesaurus and pg 250 in the Red Earth Science book

Slide 30

Cosmos Quizes #5 & 6 Quiz #5 Hiding in the Light Write 3 facts you learned from this episode. Quiz #6 Deeper, Deeper, Deeper Still Write 3 facts you learned from this episode Quiz #7 The Clean Room this FRIDAY

Slide 31

4-24-13 Add a sketch and IMOW (In My Own Words) to the following vocab words: Crust Mantle Core Today: Finish foldable, Foldable question sheet, and Lesson 4 minutes