Where is the density of the mantle material greater at point A or point B? Answer: The density is greater
at point C. At point C the magma si cooling
, as the magma cools the particles move slower and the density increases and gravity pulls the magma back towards the core.
Where is the density of the mantle material greater point B or C?
Question Three: Where is the density of the material greater, at point B or point C? Explain why. Point C, as the material passing through this point would have been at the top of the
mantle
for longer than the material at point C (which would have just risen).
Where is the temperature from the mantle material greater?
The temperature of the mantle varies greatly, from 1000° Celsius (1832° Fahrenheit) near its boundary with the crust, to 3700° Celsius (6692° Fahrenheit)
near its boundary with the core
. In the mantle, heat and pressure generally increase with depth.
What happened to the temperature and density of the material between point D and A?
Where is the density of the material greater, at point B or point C? … What happens to the temperature and density of the material between points D and A?
Heat from the core causes the temperature of the material to rise
, this means the density will decrease since hotter material is less dense than cooler material. 8.
What happens during convection?
Convection is
the transfer of thermal energy by particles moving through a fluid
. … Moving particles transfer thermal energy through a fluid by forming convection currents. Convection currents move thermal energy through many fluids, including molten rock inside Earth, water in the oceans, and air in the atmosphere.
What causes convection currents in the mantle?
Convection currents are identified in Earth’s mantle.
Heated mantle material is shown rising from deep inside the mantle
, while cooler mantle material sinks, creating a convection current.
Which best describes the convection currents in Earth’s mantle?
Which best describes the convection currents in Earth’s mantle?
They transfer potential energy away from Earth’s core toward its crust
. They transfer thermal energy away from Earth’s core toward its crust.
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
.
Is the 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.
What is the hottest layer of the Earth?
The core
is the hottest, densest part of the Earth. Although the inner core is mostly NiFe, the iron catastrophe also drove heavy siderophile elements to the center of the Earth.
What does the lithosphere contain?
The lithosphere includes
the brittle upper portion of the mantle and the crust
, the outermost layers of Earth’s structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below. Although the rocks of the lithosphere are still considered elastic, they are not viscous.
What happens to the density of a fluid as it temperature increases decreases?
Density increase as the temperature decreases
. Below 4 deg C, however, the density decreases again. … This is the reason why liquid water is more dense than solid water. The bonds in water break more slowly as temperature decreases and the structure tend to trap fewer extra water molecules.
Where does the heat come from that drives convection in the mantle?
Convection Currents in the Mantle
Heat in the mantle comes from
the Earth’s molten outer core, decay of radioactive elements and, in the upper mantle
, friction from descending tectonic plates.
What are 4 examples of convection?
- Breeze. The formation of sea and land breeze form the classic examples of convection. …
- Boiling Water. Convection comes into play while boiling water. …
- Blood Circulation in Warm-Blooded Mammals. …
- Air-Conditioner. …
- Radiator. …
- Refrigerator. …
- Hot Air Popper. …
- Hot Air Balloon.
What is called convection?
1 :
the action or process of conveying
. 2a : movement in a gas or liquid in which the warmer parts move up and the cooler parts move down convection currents. b : the transfer of heat by convection foods cooked by convection — compare conduction, radiation.
What is convection and how does it work?
Convection occurs
when particles with a lot of heat energy in a liquid or gas move and take the place of particles with less heat energy
. Heat energy is transferred from hot places to cooler places by convection. Liquids and gases expand when they are heated. … The denser cold liquid or gas falls into the warm areas.
