Teaching Point: “To analyze the layers of Earth’s interior.” Do now Discussion: How deep do you think the Earth goes (in miles)? Do you think its possible to “dig a hole a China?

Deepest Holes in the World TP: “To analyze the layers of Earth’s interior.” Deepest Holes in the World

Layers of the Earth- ESRT Pg.10 TP: “To analyze the layers of Earth’s interior.” Layers of the Earth- ESRT Pg.10

The Continents and Ocean Floor TP: “To analyze the layers of Earth’s interior.” The Continents and Ocean Floor Two types of crust: Continental- 2.7 g/cm3- mostly granite rock (thick) Oceanic- 3.0 g/cm3- mostly basalt rock (thin)

TP: “To analyze the layers of Earth’s interior.” The “Moho” Boundary The boundary between crust and rigid upper mantle is called the mohorovicic discontinuity, or “moho”

All the Layers of Earth Layers shallow to deep: Crust (solid) TP: “To analyze the layers of Earth’s interior.” All the Layers of Earth Layers shallow to deep: Crust (solid) Mantle (solid) Outer Core (liquid) Inner Core (solid) Temperature, pressure, and rock density increase with depth.

Pressure and Depth Mantle O. Core I. Core Asthenosphere TP: “To analyze the layers of Earth’s interior.” Pressure and Depth Each of the dotted lines is the boundary between layers in the Earth; the black line is the pressure Mantle O. Core I. Core Asthenosphere

Example Pressure Problem TP: “To analyze the layers of Earth’s interior.” Example Pressure Problem What is the pressure at 2000 km? How about at the outer core/mantle boundary? Mantle O. Core I. Core Asthenosphere

TP: “To analyze the layers of Earth’s interior.” Temperature and Depth Each of the dotted lines is the boundary between layers in the Earth; the black line is the temperature Mantle O. Core I. Core Asthenosphere

Example Temperature Problem TP: “To analyze the layers of Earth’s interior.” Example Temperature Problem What is the temperature at 1500km? How about at the outer core/inner core boundary? Mantle O. Core I. Core Asthenosphere

TP: “To analyze the layers of Earth’s interior.” Rock Density and Depth

Mid-Lesson Assessments TP: “To analyze the layers of Earth’s interior.” Mid-Lesson Assessments Take out your own Plicker Card. You should all have a number assigned to you. When you see the answer you think is correct, turn your card so the multiple choice answer letter of your choice is facing up Wait until the entire class is done, and do not change your answer based on others!

Mid-Lesson Assessments TP: “To analyze the layers of Earth’s interior.” Mid-Lesson Assessments Compared to Earth’s continental crust, Earth’s oceanic crust is a. thinner and more dense b. thinner and less dense c. thicker and more dense d. thicker and less dense

Mid-Lesson Assessments TP: “To analyze the layers of Earth’s interior.” Mid-Lesson Assessments The inferred temperature and pressure of Earth’s interior at a depth of 3,000 kilometers are approximately a. 1000° C and 0.5 million atmospheres b. 1000° C and 1.0 million atmospheres c. 5000° C and 1.5 million atmospheres d. 5000° C and 3.0 million atmospheres

Intellectual Engagement TP: “To analyze the layers of Earth’s interior.” Intellectual Engagement Why do you think melting occurs as the oceanic rock moves down into the Earth? How does the chart on page 10 show where melting occurs?

Class Activity- Earth’s Insides TP: “To analyze the layers of Earth’s interior.” Class Activity- Earth’s Insides Instructions: Using what we just learned using page 10 from the ESRT… Task A- Task B- Task C- Flexible Group- take out your portfolios and meet with me in the back of the room.

TP: “To analyze the layers of Earth’s interior.” Lesson Summary In your tables of four, go back into your notes and consider what we have just learned today, and then… 1. Identify three (3) important concepts we learned today, and then… 2. Place those three in order from the most important to the least important concept.