Earth's Layers
Plate Tectonics
Convection Currents
Density
Layers of Solid Earth
100
Layers that are solid and why.
What are the Inner core because of the high pressure and the crust because of the cooling temperature.
100
Plate tectonics is about this.
What is a theory that earth's outer core shell is divided into several plates that glide over the mantle.
100
Hot substances are generally ___________ dense.
What is less?
100
Density compares these two qualities.
What is volume and mass?
100
The layers where convection cells occur that cause the movement of the plates.
What is the mantle?
200
Earth's main layers
What are the crust, mantle,outer core, inner core?
200
USA is on this plate
What is the North American plate?
200
When heat is being transferred from one place to another by mass motion of a fluid you get this.
What is a convection current?
200
The densest layer in the Earth
What is the inner core?
200
Composition of the inner core.
What is iron?
300
This layer makes up the asthenosphere.
What is part of the upper mantle nearest the crust
300
Plates are resting on this layer.
What is the asthenosphere?
300
Convection currents are made by this.
What is uneven heating of the mantle?
300
The more dense layer of the crust.
What is the oceanic crust?
300
Inner core rotates at a _________ rate as the rest of the Earth.
What is different?
400
The part of the mantle which is made up of a soft rock that bends like plastic.
asthenosphere
400
Boundary between the crust and the mantle where seismic waves change speed.
What is the Moho?
400
This pushes hot material up.
What is colder, more dense material?
400
The density of one piece of Hershey chocolate as compared to 3 pieces.
What is the same density?
400
The thickest layer in the Earth.
What is the mantle?
500
The crust is also known as this.
What is the lithosphere?
500
Plates move because of this movement in the mantle.
What are convection cells.
500
Causes movement of plates.
What are convection cells?
500
Objects with this density will float in freshwater.
What is a density less than 1 g/mL?
500
The moon no longer has active lava flows because of this.
What is cooling of the moon because it is smaller?