What Are The Circumstances Under Which Convection Can Occur In A Substance??
What are the circumstances under which convection can occur in a substance? accretion differentiation and radioactivity.
Under what circumstances can differentiation occur in planets?
Under what circumstances can differentiation occur in a planet? The planet must have a molten interior. You just studied 26 terms!
Which of the following best describes convection?
Which of the following best describes convection? It is the process in which warm material expands and rises while cool material contracts and falls. The three principal sources of internal heat of terrestrial planets are? Heat escapes from a planet’s surface into space by thermal radiation.
What are the three main sources of internal heat for terrestrial planets?
Pressure friction and radiation.
Which of the following worlds have the thinnest Lithospheres?
-Among the five terrestrial worlds the largest Venus and Earth have the thinnest lithospheres -The smallest Mercury and the Moon have the thickest lithospheres.
What are the conditions necessary for a terrestrial planet?
What are the conditions necessary for a terrestrial planet to have a strong magnetic field? Very high pressures like those found deep within planetary interiors can compress rocks so much that they stay solid even when temperatures are high enough to melt them under ordinary conditions.
What is not necessary for internal differentiation to occur in a planet?
What is necessary for differentiation to occur in a planet? … No planetary magnetic fields are generated by moving charges around and if the core is cold nothing is moving. Erosion. Surface changes made by wind water or ice.
Under what circumstances can differentiation occur in a planet quizlet?
Under what circumstances can differentiation occur in a planet? The planet must have a molten interior. the rigid rocky material of the crust and uppermost portion of the mantle. What is the most important factor that determines the thickness and therefore strength of the lithosphere?
Which of the following is an example of convection?
Everyday Examples of Convection
radiator – A radiator puts warm air out at the top and draws in cooler air at the bottom. steaming cup of hot tea – The steam you see when drinking a cup of hot tea indicates that heat is being transferred into the air. ice melting – Ice melts because heat moves to the ice from the air.
Which of the following is the accepted concept of convection current?
The heat energy can be transferred by the process of convection by the difference occurring in temperature between the two parts of the fluid. … Hence Convection Current is defined as “a process of continuous heating up of liquids or gases by the process called as Convection.
What provides the internal heat for terrestrial planets?
Currently the terrestrial planets’ primary source of heat is radioactivity. Describe the three sources of internal heat of the terrestrial planets. Accretion is heat generated by the agglomeration of planetesimals when the planet was formed.
What is the main source of heat inside the terrestrial planets?
The terrestrial planets emit as much energy to space in the form of thermal radiation as they receive from the sun in the form of solar radiation. On Earth the incident solar radiation is absorbed mostly at the surface but it is also scattered and absorbed by atmospheric gases aerosols and clouds.
Which internal heat source still generates heat within the terrestrial worlds today?
Which internal heat source still generates heat within the terrestrial worlds today? heat from radioactive decay.
What are the basic requirements for a terrestrial world to have a global magnetic field?
What are the basic requirements for a terrestrial world to have a global magnetic field? A core layer of molten convecting material and sufficiently rapid rotation.
What type of stresses broke Earth’s lithosphere into plates?
The type of stresses that broke the Earth’s lithosphere into plates are the tectonic forces. Tectonic forces come from the movement of the mantle and…
What caused Earth’s lithosphere to fracture into plates?
The plate consists of continental or oceanic crust and the cool rigid upper mantle directly below the crust. The theory that Earth’s lithosphere is fractured into plates that move relative to each other and are driven by convection currents in the mantle. Most volcanic and seismic activity occurs at plate margins.
Which one explains why convection can occur in the troposphere but not in the stratosphere?
Which one explains why convection can occur in the troposphere but not in the stratosphere? Temperature declines with altitude in the troposphere but increases with altitude in the stratosphere.
What are the three conditions necessary for a planet to have a magnetic field?
The conditions necessary for this process to take place include the existence of a large volume of electrically conducting fluid (the liquid iron alloy at the core) the energy to drive this electrical dynamo through convection (the transfer of heat from the bottom to the top of core as the liquid cools) and the …
What is the most important factor that determines the thickness of a planet’s lithosphere?
Perhaps similar to parts of Venus
They discovered that surface temperature is the primary control on the thickness of brittle exoplanet lithospheres although planetary mass distance to its star and even age all play a role.
In what planets did differentiation occur?
Differentiation occurred on all of these planets: Venus Jupiter Mercury Mars Neptune.
How did Earth become differentiated?
Which planet in the solar system has not been examined up close by spacecraft?
Out of the five planets known since ancient times as the ‘wandering stars’ Mercury is the one least explored. Unlike Venus Mars Jupiter and Saturn Mercury is notoriously difficult to observe from Earth. Being the innermost planet of the Solar System it always appears too close to the Sun.
Which objects are most likely to be differentiated?
Small asteroids comets Kuiper Belt objects and small moons were likely never heated enough to be differentiated therefore their chemical makeup and structure are more representative of their origin.
Which of the following is an example of convection astronomy quizlet?
Which of the following is an example of convection? Warm air expanding and rising while cooler air contracts and fall.
What is the main factor that makes Earth more geologically active than the other terrestrial planets?
Why is the Earth geologically active? Earth is Geologically active because it still has heat within the core. What is particularly unique about the Earth’s atmosphere? It protects the surface against solar radiation makes our planet warm enough for liquid water to exist and it is very thin.
When can convection occur?
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.
How many types of convection are there?
There are two types of convection: natural convection and forced convection. Natural convection is produced by density differences in a fluid due to temperature differences (e.g. as in “hot air rises”).
What causes convection?
How does convection current occur?
In which of these does convection only occur in?
Convection is the transfer of heat energy through the movement of fluid particles. Hence convection cannot take place in solids since the solid particles are not fluid. Thus convection only takes place in liquids and gases.
GCSE Physics – Conduction Convection and Radiation #5
Conduction -Convection- Radiation-Heat Transfer