Bellwork 11-13-13 Obj : SWBAT describe the layers within the earth.

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# Bellwork 11-13-13 Obj : SWBAT describe the layers within the earth. - PowerPoint PPT Presentation

Bellwork 11-13-13 Obj : SWBAT describe the layers within the earth. What happens to the temperature as you move from the crust to the core of the earth? What happens to pressure as you move from the crust to the core of the earth. Which layer of the earth is liquid?

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Bellwork 11-13-13

Obj: SWBAT describe the layers within the earth.

What happens to the temperature as you move from the crust to the core of the earth?

What happens to pressure as you move from the crust to the core of the earth.

Which layer of the earth is liquid?

What layer do you think is the most density, or the heaviest?

Notetaker setup

On each box include:

• - The thickness of the layer
• -The name of the layer
• - Temperature
• - Composition
• - If it is solid or liquid

Earth Structure

Putting temperature into perspective

-Boiling hot water= 212°F or 100°C

-Stove (gas\electric)=1800°F

-Red hot iron= 1,000 °C (1,830 °F)

-Copper= 1084 °C (1983 °F)

-Blowtorch flame= 1,300 °C (2,370 °F)

-Glass=1500 °C (2000 °F)

-Iron= 1538 °C (2800 °F)

-Diamond= 3,550 °C (6422°F)

-Tungsten= 3410 °C (6170 °F)

-Surface of the sun= 6000 °C (10,832°F)

-Core of the sun= 15,000,000°C

Starting from the outside in...

• The Earth’s Crust makes up only ONE percent of its total mass!
• Ocean Crust= 5-6 km(3.1-3.7 miles) thick
• Continetial Crust=15 -75km thick(9-46 miles)

Ocean Crust= 5-6 km(3.1-3.7 miles) thick

Ocean Crust is mostly made of Basalt

Basalt has an average density

of 3.3 g/cm3

Continetial Crust

15 -75km thick(9-46 miles)

Continetial Crust

is mostly made out of Granite

Average density= 2.7 g/cm3

Crusty Chemistry

The crust is mostly made up of rocks that contain magnesium potassium, iron, sodium, aluminum, silicon, and oxygen.

Upper mantle chemistry

-The upper mantle contains magnesium, iron, aluminum, silicon, and oxygen.

*notice the ”lighter” elements disappear and are left in the crust

Na, K, Ca

The Mantle

TheMantlemakes up two-thirds of Earth’s mass and is 2,900km thick (1800miles)!

*Average temperature of the mantle = 1000-2200 C (1832-3992 F)

What the mantle looks like

The Mantle is made mostly out of the mineral Olivine (Mg, Fe)2SiO4

Outer core

-The outer core is 2250 km thick and has an average temperature of 3700°C (6700°F)

-Also responsible for the Earths magnetic field

-Composed of liquid Iron, Nickel, oxygen, and sulfur

r

Inner core

-The earths inner core is a solid Iron and nickel alloy that has a radius of about 1,200 km (758 miles).

Not the real core!

-The inner core acts like a giant magnet and is responsible for our magnetic field.