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Earth's layer's and boundaries!!!!!
Transcript of Earth's layer's and boundaries!!!!!
BY: Dylan Toups, Jordan Le, Natasha Kokkodil, and Shayla Mckenzie
Our journey first starts with our Earth's layers. There are four main layers in our Earth. First we will start with the layer we live on....The Crust!
Earth's Layers Introduction
Plate boundaries are where the tectonic plates move. A few different types of boundaries include, convergent boundaries, divergent boundaries, and transform boundaries. In the following slides, you will learn about these three boundaries and the effects that happen after they occur!
Creation of a new seafloor.
Shallow earthquake activity
Activity in the form of fissure eruptions
A submarine mountain range such as the Mid-Atlantic Ridge Volcanic
The Effects of Divergent Boundaries
The Crust Fact's
The Mantle Introduction
The Mantle is our second layer. This layer is where all the magma is stored. Convection currents happen in this hot, and fiery layer. So without further ado.....The Mantle!
The crust is the thinnest layer that ranges from 5 kilometers to 40 kilometers
The main elements that make up Earth's crust are silicon and oxygen
There are 2 types of crust: Continental and Oceanic Crust
The crust is the thinnest, outer-most layer
Divergent boundaries are when the plates diverge or move away from each other! There are two types of divergent boundaries. One boundary called seafloor spreading, when the oceanic plates diverge and create a new seafloor. The other type of divergent boundary is called continental drift. When continental drift happens, the continents drift apart!
Is less dense than Oceanic crust
It is made out of a Igneous rock called Granite
The Mantle is the thickest of all the layers. It is about 2,900 kilometers thick (1802 miles). The mantle has an ability to flow like putty, which is called plasticity.
A convergent boundary is when the plates converge or get pushed together. These types of boundaries are destructive because the plates push together and destroy land. There are 3 types of convergent boundaries (oceanic-oceanic, continental-continental, continental-continental). Two plates collide
Either: Oceanic lithosphere is subducted,
Or, two continents collide and create mountains
Is a Harder dense than Continental Crust
It Is made out of a heavier Igneous rock called Basalt
Pictures of the Mantle
The Effects of Convergent Boundaries
Transform Boundaries happen when two plates shear. Such as an shearing your hands together to create heat in the winter. It creates what we call a slip-strike fault. this is when the tectonic plate get stuck, then slip free suddenly, creating earthquakes.
The effects of the Convergent Boundary( Continental to Continental) is the formation of folded mountains, ex. The Himalayas.
Transform Boundaries effects
Transform boundaries cause:
One example of a transform boundary is the San Andreas Fault.
The inner core facts
Oh boy, it's getting really hot in here! Well duh....because it's the hottest layer out of the four! It's probably somewhere around 5,000 and 7000 degrees Celsius( 9000 and 13,000 degrees Farenheit)!
Because of all the pressure, the inner core is mostly solid. Earth has a ball of metal in the middle of it, so the entire planet is magnetic.
Outer Core Facts
The Outer core is 4000-5000 degrees Celsius.
2,258 km thick
Is made out of iron, nickel.
Is a liquid layer
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