Layers
How many basic layers does Earth have?
4
What are the 2 types of crust?
Oceanic and Continental crust
Describe the motion of
1. Warm magma
2. Cool Magma
1. Rises
2. Sinks
How many layers is the core divided into?
2
What causes the crust to move?
Convection currents in the mantle
Name the main layers of Earth
Crust, Mantle, Outer core, and Inner Core
The oceanic crust is thicker or thinner than the continental crust?
Thinner
Where in the mantle do convection currents flow
Asthenosphere
What is the outer core made of?
Iron and nickel
What does the inner core do within the outer core
It rotates
What is the hottest layer of Earth?
Inner Core
True/False
Only the Continental Crust is a part of the lithosphere?
False
What is the rising of warm magma and sinking of cool magma?
Convection currents
What is the outer core responsible for?
The Earth's electromagnetic field
Describe the density:
1. Warm magma
2. Cool Magma
1. Less dense
2. More dense
The layer that is responsibe for Earth's magnetism
Outer Core
What is the Continental crust made of?
What is the Oceanic crust made of?
Granite (continental) and Basalt (oceanic).
The mantle rocks are...
Solid and molten rock (magma)
What is the inner core made of?
Primarily Iron and some nickel.
Give 3 characteristics of the inner core
Made of mostly Iron, the hottest layer, solid
The layer of Earth where magma is located
Mantle
List 3 characteristics of the crust
Cold, brittle and rigid, thinnest layer, least dense layer of the Earth.
List three parts of the mantle and its characteristics
Solid brittle at the top (rigid, upper mantle), hot and molten in the middle (asthenosphere), solid at the bottom (lower mantle or mesosphere).
Give 3 characteristics of the outer core
made of iron and nickel, liquid, gives the Earth its magnetic field.
DAILY DOUBLE!
List the process of the Earth's convection current.
Magma is heated near the Lower Mantle and Core
Warmer, Less Dense Magma Rises toward the Upper Mantle.
Magma Cools Near Crust
Cool Dense Magma Sinks back down through the Mantle back to the Core
Magma reheats and cycle restarts