Tuesday, January 27, 2015 8:10 – 8:40

SCIENCE TIME 8:40 – 9:20

The Lithosphere The outer part of the earth, consisting of the crust and upper mantle, approximately 100 km (62 mi.) thick. http://studyjams.scholastic.com/studyjams/jams/science/rocks-minerals-landforms/lithosphere-hydrosphere-atmosphere.htm

Hardest & Hottest! – 6000+ degrees Celsius Crust – Mantle - Core Hardest & Hottest! – 6000+ degrees Celsius About 2900 KM thick!

Science Binder Pages

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

The Four 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!

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).

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

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

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.

The Mantle The Mantle is the largest 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.

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.

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: Don’t get your face too close to the boiling water!

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.

The Inner Core The inner core of the Earth has temperatures and pressures so great 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.

The End Pair Up and answer this question: Have we ever seen part of the Mantle? Explain. © Copyright 2006.  M. J. Krech. All rights reserved.

Hands On Activity!

Vocabulary Activity – Imagine That! Close your eyes and imagine: After designing a super drill your goal was to dig through the Lithosphere. You kept digging until you thought you would reach China. You couldn’t believe the depth of the hole. It was a tunnel! Think-Pair-Share: What makes up the Lithosphere? If continued drilling down to the outer core, about how many kilometers would you have gone?

What’s the hottest and hardest layer at the center of the Earth called? inner core

What is the crust and upper mantle called? lithosphere

Review Science Workbook Chapter 8 pages 174 - 177

Homework Pages 178-181

Restroom Break 9:20 – 9:30

Math Time!

FACEing Math x 2 Finish todays for homework and one from Friday (if not already finished)

MOVE TO LEARN http://www.movetolearnms.org/how-do-i-do-it/fitness-videos-4-6/cranium-corral/

Out of Classroom! 12:00 – 12:45 Activity 12:45 – 1:15 Lunch 1:15 – 1:45 Recess

Expository Nonfiction Writing Time! Expository Nonfiction W52 – write informative/explanatory texts 1:45 – 2:40

Text Structure When you read informational text notice the text structure. This will help you understand and remember the information better. When you write informational text, think about which text structure would best organize your information so your reader can understand and remember.

Text Structure Review

What is text structure? The way authors organize facts to help readers understand informational text.

In-Class Magazine Project You must use your time wisely!!

3 Text Structure Examples for Magazine Project

3 More Text Structure Examples for Magazine Project

In-Class Magazine Project Today – Choose Topic!!

Station Rotation B! 2:40 – 3:10

3:10 – 3:15 Wrap Up! Pack-Up Office will announce: Car Riders – Leave around 3:15 Bus Riders – Teacher walks out about 3:22 (listen to intercom-dismisses by grade)