This presentation discusses about Earth's Internal Heat, which is the main reason why different geologic processes occur. This also tells about the two types of internal sources of earth's heat, which are the primordial heat and radiogenic heat.

1. Welcome to
EARTH AND
LIFE SCIENCE!
CARLO JAMES Q. SABLAN
SHS Teacher 2

2. QUOTATION
“The starting point of all
achievements is desire. A
small amount of fire makes a
small amount of heat.”
2

3. PUZZLE GAME
Directions:
Write down ten words that
you can find in the puzzle.
3

4. “
4
Mantle Convection
Current Primordial
Earth Radiogenic
Tectonic Heat
Radiation Conduction

5. The Earth’s
INTERNAL
HEAT

6. ACTIVITY
Directions:
The class will be grouped into two. The
groups will read and analyze two
respective passages. After reading,
the groups will have to answer some
questions.
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7. Rubrics
7

8. The Earth’s
INTERNAL
HEAT

9. 9

10. Sources of Internal Heat
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1. PRIMORDIAL HEAT
 heat from accretion and
bombardment of the Earth during
the early stages of formation
 The core is a storage of primordial
heat.

11. Sources of Internal Heat
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1. PRIMORDIAL HEAT

12. Sources of Internal Heat
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1. PRIMORDIAL HEAT

13. Sources of Internal Heat
13
2. RADIOGENIC HEAT
 the thermal energy released as a
result of spontaneous nuclear
disintegration
 It involves the disintegration of natural
radioactive elements inside the earth
– like Uranium, Thorium and Potassium.

14. Sources of Internal Heat
14
2. RADIOGENIC HEAT

15. Heat Transfer Processes
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1. CONDUCTION
 defined as the process by which
heat energy is transmitted through
collisions between neighboring
atoms or molecules
 molecules do not transfer location

16. Heat Transfer Processes
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1. CONDUCTION

17. Heat Transfer Processes
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1. CONVECTION
 involves transfer of heat by the mass
motion of molecules, which is a more
efficient means of heat transport in
the Earth compared to pure
conduction

18. Heat Transfer Processes
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1. CONVECTION

19. Heat Transfer Processes
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1. RADIATION
 involves transfer of heat through
electromagnetic radiation and does
not involve particles to travel through
 is the least important mode of heat
transfer in the Earth

20. Heat Transfer Processes
20
1. RADIATION

21. Heat Transfer in Earth
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22. Mantle Convection
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23. Mantle Convection
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24. Summary
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1. What are the sources of Earth’
internal heat?
2. Describe the three heat transfer
processes.
3. What is the importance of heat in
our planet?

25. Think Over
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In your own words, how do the
three (3) major processes of
heat transfer affect the
temperature of the Earth?

26. Quiz
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Directions:
Read each question and fill in the
blanks with the correct term to
complete the statement.

27. Quiz
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1. __________________ in the interior of the earth
can be classified as primordial and radiogenic
heat.
2. The thermal energy released as a result of
spontaneous ____________ is called Radiogenic
Heat while the internal heat energy accumulated
by ____________ in a planet during its few million
years of evolution is called Primordial heat.
3. There are three processes that transfer heat:
____________, ____________, and radiation.

28. Quiz
28
Convection Accretion
Heat Nuclear decay
Conduction Magma
WORD POOL

29. Quiz
29

30. Assignment
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Directions: Answer the questions
below.
1. What is magma?
2. How is magma formed?
3. What is magmatism?

31. Thank You!