Earth's Internal Heat

What are the two factors that affect conduction on the Earth’s surface?

• radioactive decay and nuclear disintegration of elements

• movement of plates and radiation from the Earth’s core

• heat from the Earth's core and radiation from the Sun

• stored magma and volcanic eruption

Which of the following is described as the process of heat exchange between

the Sun and the Earth that controls the temperatures of the latter?

• conduction

• convection

• insolation

• radiation

How the conduction in the surface of the earth affect the temperature of our

atmosphere?

• Air molecules do not come in contact with the warmer surface of the

  land and ocean resulting to the increase of its thermal energy.

• Air molecules do not come in contact with the cooler surface of the land

  and ocean resulting to the increase of its thermal energy.

• Air molecules come in contact with the warmer surface of the land and

  ocean resulting to the increase of its thermal energy

• Air molecules come in contact with the cooler surface of the land and

  ocean resulting to the decrease of its thermal energy.

How does the mantle behave as a viscous fluid on a geological time scale?

• altitude

• pressure

• radiation

• temperature

Why radioactive decay plays a significant role in Earth’s internal heat?

• Spontaneous nuclear disintegration of radioactive elements produced

  thermal energy

• Radioactive element can be found anywhere in the planet.

• When radioactive element decays, it produces heat.

• All of the these.

What kind of process by which heat energy is transmitted through collisions

between neighboring atoms or molecules?

• conduction

• convection

• insolation

• radiation

What kind of heat transfer occurs mostly on the Earth’s surface?

• Conduction

• Convection

• Insolation

• Radiation

Which of the following stores magma and located in a region just beneath the

crust all the way to the core?

• crust

• inner core

• mantle

• outer core

What refers to the shaking of the surface of the Earth resulting from a

sudden release of energy caused by a convection current?

• earthquake

• hurricane

• storm surge

• volcanic eruption

How much is the approximate terawatts in the flow of heat in Earth’s interior

to its surface?

• 41 terawatts

• 43 terawatts

• 47 terawatts

• 49 terawatts