Earth History 4.85 Igneous rock / Earth Layers

Front

What is the mantle?

Back

The mantle is a layer of Earth located beneath the crust, composed of semi-solid rock that flows slowly over time.

Front

What is magma?

Back

Magma is molten rock located beneath the Earth's surface, which can rise to form lava during volcanic eruptions.

Front

What type of rock forms from cooled lava?

Back

Extrusive igneous rock forms from lava that cools quickly on the Earth's surface.

Front

What type of rock forms from cooled magma?

Back

Intrusive igneous rock forms from magma that cools slowly beneath the Earth's surface.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive igneous rocks have larger crystal grains due to slow cooling, while extrusive igneous rocks have smaller crystals due to rapid cooling.

Front

Which layer of the Earth is the thickest?

Back

The mantle is the thickest layer of the Earth.

Front

What is the outer core?

Back

The outer core is a liquid layer of the Earth located beneath the mantle and above the inner core, composed mainly of iron and nickel.

Front

What is the inner core?

Back

The inner core is the solid, innermost layer of the Earth, composed primarily of iron and nickel.

Front

What is the crust?

Back

The crust is the thin, outermost layer of the Earth, where we live, consisting of solid rock.

Front

What is the process of rock formation in Volcanoes National Park, Hawaii?

Back

Rocks in Volcanoes National Park form as hot lava cools and solidifies after erupting from volcanoes.