“Crust” describes the outermost shell of a terrestrial planet. … The crust is made of solid rocks and minerals. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
What is the difference between crust and mantle quizlet?
The crust is the thin, outermost layer of the Earth
that is composed differently than the mantle. The lithosphere is a thick layer that contains both the crust and the upper mantle (which is rigid compared to the underlying asthenosphere). Why does a seismic wave travel faster through solid rock than through water?
What is crust and mantle of the Earth?
The Earth is divided into three main layers. …
The mantle
is the mostly-solid bulk of Earth’s interior. The mantle lies between Earth’s dense, super-heated core and its thin outer layer, the crust. The mantle is about 2,900 kilometers (1,802 miles) thick, and makes up a whopping 84% of Earth’s total volume.
What is the main difference between the two layers of the mantle?
There are very small differences between the two layers.
The upper mantle has Olivine (a very special rock), compounds with silicon dioxide, and a substance called Peridotite
. The lower mantle is more solid than the upper mantle.
What is the difference between crust and core?
The crust is the outermost layer of the earth. The core is the innermost layer of the earth. Crust is about 60 km thick below high mountains and
just 5-10 km below the oceans
. … Core has very high temperature ranging from 4400°C to about 6000°C.
What word best describes the lower mantle?
The lower mantle, historically also known as
the mesosphere
, represents approximately 56% of Earth’s total volume, and is the region from 660 to 2900 km below Earth’s surface; between the transition zone and the outer core.
Why is the mantle the thickest layer?
Below the crust is the mantle, a dense, hot layer of semi-solid rock approximately 2,900 km thick. The mantle, which contains more iron, magnesium, and calcium than the crust, is
hotter and denser because temperature and pressure inside the Earth increase with depth
.
What are some similarities and differences between the lithosphere and the crust?
Both the lithosphere and
asthenosphere are part of Earth and are made of similar material
. Lithosphere is made up of Earth’s outermost layer, the crust, and the uppermost portion of the mantle. In comparison, the asthenosphere is the upper portion of Earth’s mantle (which is also the middle layer of Earth).
What does it mean to mantle something?
: to cover with or as if with a mantle :
cloak the encroaching jungle
growth that mantled the building— Sanka Knox. intransitive verb. 1 : to become covered with a coating. 2 : to spread over a surface.
What is the difference between the mantle and the lithosphere?
Most of the mantle is a thick fluid that moves in currents, but the very outermost portion of the outer mantle is solid. This portion and the solid
crust
make up the lithosphere.
Is lower mantle solid or liquid?
The lower mantle is the
liquid inner layer
of the earth from 400 to 1,800 miles below the surface. The lower mantle has temperatures over 7,000 degrees Fahrenheit and pressures up to 1.3 million times that of the surface near the outer core.
Why is the mantle divided into 2 layers?
Explanation: The difference between these two layers of the mantle
comes from the predominant mineral phases in the rock
. Both the upper and lower mantle consist primarily of silicate minerals. … Lithosphere: The uppermost part of the uppr mantle, continuing into the crust, is the rigid outer structure of Earth’s rock.
What are the two layers of the mantle called?
Earth’s mantle is divided into two major rheological layers:
the rigid lithosphere comprising the uppermost mantle, and the more ductile asthenosphere
, separated by the lithosphere-asthenosphere boundary.
What are three differences between the core and the crust?
| Crust Core | (i)This is the outermost layer of the earth. (i)This is the innermost layer of the earth. |
|---|
What is the crust made of?
The crust is made of
solid rocks and minerals
. Beneath the crust is the mantle, which is also mostly solid rocks and minerals, but punctuated by malleable areas of semi-solid magma. At the center of the Earth is a hot, dense metal core.
What are the characteristics of Earth’s crust mantle and core?
The inner core is solid, the outer core is liquid, and the mantle is solid/plastic
. This is due to the relative melting points of the different layers (nickel–iron core, silicate crust and mantle) and the increase in temperature and pressure as depth increases.
