Layers of the Earth
This is the thinnest outer layer of the Earth.
What is the crust?
This type of rock forms from compacted and cemented sediment.
What is sedimentary rock?
This substance is naturally occurring, solid, and has a crystal structure and definite chemical composition.
What is a mineral?
This process causes rock in the mantle to rise.
What is heating?
This ‘sphere’ is hard and solid and includes the crust and upper mantle.
What is the lithosphere?
This layer is the thickest of all Earth's layers.
What is the mantle?
Rocks that form from slowly cooling magma below the surface are called this.
What are intrusive igneous rocks?
If a material is made of grains, it is classified as this.
What is a rock?
When mantle rock is heated, its density does this.
What is decreases?
This ‘sphere’ is softer and can flow, found beneath the lithosphere.
What is the asthenosphere?
This layer is made of liquid metal and causes Earth's magnetic field.
What is the outer core?
This process breaks rocks into smaller pieces called sediment.
What is weathering and erosion?
Over 5,000 of these have been identified on Earth.
What are minerals?
This cycle describes how rocks change from one type to another over time.
What is the rock cycle?
The lithosphere includes the top layer of this body of water.
What is the ocean?
The solid inner core is made mostly of these two metals.
What are iron and nickel?
These rocks form when existing rocks change due to heat and pressure.
What are metamorphic rocks?
Minerals can be left behind after this process when water disappears.
What is evaporation?
The movement of the mantle’s material helps form new rocks and causes this type of motion.
What are plate movements?
The asthenosphere is under intense pressure and behaves in this way.
What is flexible?
This layer experiences the most heat and pressure.
What is the inner core?
When melted rock cools quickly at the surface, it turns into this type of rock.
What are extrusive igneous rocks?
The process that forms minerals from a liquid after water evaporates.
What is crystallization?
The ultimate energy source for organic processes that form minerals.
What is the Sun?
Compared to the lithosphere, rocks in the asthenosphere do this due to high pressure and temperature.
What is flow slowly?