The Earth
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Earth
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20 Terms
Core
The center of the earth, consisting of the inner core and outer core.
Inner Core
The solid innermost layer of the Earth's core, about 2200 km thick and around 10,000 C hot, primarily made of iron and nickel.
Outer Core
The liquid layer of the Earth's core, about 2200 km thick, consisting of iron and nickel, and is between 4000 C to 6000 C hot.
Mantle
The layer of the Earth between the crust and core, approximately 2800 km thick, with temperatures ranging from 500 C at the top to 3000 C at the bottom.
Crust
The outermost layer of the Earth, varying in thickness from 7 km to 50 km and composed of rocks and minerals.
Lithosphere
The solid outer shell of the Earth, consisting of the crust and upper mantle, approximately 100 km thick.
Igneous Rocks
Rocks formed from the cooling and solidification of magma or lava.
Intrusive Igneous Rocks
Rocks that form when magma cools slowly in small pockets beneath the surface.
Extrusive Igneous Rocks
Rocks formed from the rapid cooling of lava on the Earth's surface.
Pumice
A type of extrusive igneous rock characterized by its light weight and holes, formed by volcanic gases escaping from cooling lava.
What are the two types of core in Earth's structure?
The two types of core are the inner core and outer core.
How thick is the Earth's mantle?
The Earth's mantle is approximately 2800 km thick.
What is the temperature range of the Earth's crust?
The temperature of the Earth's crust ranges from 200 C to 400 C.
What is the main component of the Earth's inner core?
The main components of the Earth's inner core are iron and nickel.
What type of rocks form from volcanic eruptions?
Igneous rocks form from the cooling and solidification of magma and lava during volcanic eruptions.
How do extrusive igneous rocks form?
Extrusive igneous rocks form when lava cools quickly on the Earth’s surface.
What is the lithosphere?
The lithosphere is the solid outer shell of the Earth that includes the crust and upper mantle.
What is the role of the outer core?
The outer core generates heat from nuclear reactions, contributing to Earth's magnetic field.
What is the temperature of the outer core?
The temperature of the outer core ranges from 4000 C to 6000 C.
What type of rock is pumice classified as?
Pumice is classified
