MODULE 2 - Earth’s Internal Heat Sources Flashcards
The heat __________ from the crust down to the inner core due to several reasons.
Which of the following words will best complete the thought of the given
statement?
Increases
What layer of the earth has the highest temperature?
Core
What layer of the earth has the highest amount of molten state iron?
Core
Why is earth considered as a thermal engine?
The main source of heat comes from the produced decay of some naturally
occurring isotopes from its interior.
What happened to the amount of heat from crust down to the core?
It becomes higher.
pertains to the process by which gasses and dust of cloud were attracted by gravitational
energy?
Accretion
Layer of the earth that has greatest pressure which causes
tremendous internal heat of the earth?
Inner core
How did the Earth generate heat on its early stage of formation?
by collision of the masses of gas and dust
What type of heat transfer exists between the plate boundaries?
Thermal transfer
How do radioactive isotopes emit heat energy and contribute to Earth’s internal
heat?
by spontaneous radioactive decay
Why do some isotopes play a minor role in the production of heat in the interior
of the earth?
due to its abundance in the core
What happened to the pressure inside the Earth as you go deeper?
The pressure increases.
Why does Earth’s internal heat builds up due to gravitational pressure?
Because the escape of heat from Earth’s surface is less than the heat
generated
As you move from the surface of Earth to the inner core, what happens to the
temperature?
It increases.
what happens to the
density of the materials of each layer?
Density increases
