426534787-Earth-s-Internal-Heat (1).pptx

lesson

1. The Earth’s Internal Heat

2. Big concept Have you ever wondered why the Earth’s Interior is hot? 2

3. 3 What are the processes that helped shape Earth’s surface?

4. 4 EXOGENIC PROCESS ENDOGENIC PROCESS

5. 5

6. Two categories of the internal heat sources of the Earth: 6 PRIMORDIAL HEAT: heat from accretion & bombardment of the Earth during the early stages of formation. If you hit a hammer on hard surface several times, the metal in the hammer will heat up (kinetic energy into heat energy). RADIOACTIVE HEAT (the heat generated by long-term radioactive decay): its main sources are the four long-lived isotopes (large half-life), namely K40, Th232, U235 and U238 that made a continuing heat source over geologic time.

7. 7 Estimated internal temperature of the Earth Core-mantle boundary: 3,700°C Inner-core – outer-core boundary: 6,300°C±800°C Earth’s center: 6,400°C±600°C

8. 8 Three Types of Heat Transfer Conduction Convection Radiation

9. Redistribution of the Earth’s heat 9 Convection: Heat transfer by means of motion of fluids In the mantle of the Earth, convection occurs.

10. Redistribution of the Earth’s heat 10 Conduction: Heat is transferred directly through a material In the lithosphere of the Earth, conduction occurs.

11. MAGMA Hot, molten rock Mixture of liquid rock, minerals, and dissolved gases Formed by the melting of earth's mantle 11

12. MAGMA FORMATION rocks begin to melt at a temperature between 800 and 1200 degrees Celsius Magma forms when rocks reach temperatures high enough to melt them. Temperature and Pressure is a major factor in the formation of magma 12

13. How is heat transferred in the activity? Give evidence for your answer. Answer: Convection is shown by the presence of mounds and cracks in between the mounds. Radiation is illustrated by the emitted gas directly above the heat source. Conduction is evidenced by the submerging chocolate powder along the rims of the pan. 13

14. Describe what happens to the powder when the water starts to boil. Explain why this occurs. Answer: The chocolate powder starts to rise, forming a conical shape then cracks and emits gas. Slowly, the chocolate powder around it starts to subside and get wet. The heat source is directly beneath this zone so the hotter water is rising in that area. But since the chocolate powder traps the water, the hot water starts to move laterally under the chocolate powder, forming the conical shape, before it manages to create a crater where the water is released as gas. 14

15. How does this activity relate to the formation of magma? Answer: The water represents the asthenosphere, the chocolate powder represents the lithosphere and the candles represent heat sources. Magma is formed directly above the heat sources due to relatively higher temperature. Through convection, heat is transferred to other places. And since there are several heat sources, several convection cells develop. Where the colder portions of two convection cells meet, cracks form because the materials are being pulled downwards by the subsiding colder water. These zones represent subduction zones. 15

16. 16

17. Maps our office 17

18. 89,526,124 Whoa! That’s a big number, aren’t you proud? 18

19. 89,526,124$ That’s a lot of money 100% Total success! 185,244 users And a lot of users 19

20. Our process is easy First Second Last 20

21. Let’s review some concepts Yellow Is the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange. Blue Is the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum. Red Is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage. Yellow Is the color of gold, butter and ripe lemons. In the spectrum of visible light, yellow is found between green and orange. Blue Is the colour of the clear sky and the deep sea. It is located between violet and green on the optical spectrum. Red Is the color of blood, and because of this it has historically been associated with sacrifice, danger and courage. 21

22. You can insert graphs from Google Sheets 22

23. Android project Place your screenshot here Show and explain your web, app or software projects using these gadget templates. 23

24. Place your screenshot here iPhone project Show and explain your web, app or software projects using these gadget templates. 24

25. Place your screenshot here Tablet project Show and explain your web, app or software projects using these gadget templates. 25

26. Place your screenshot here Desktop project Show and explain your web, app or software projects using these gadget templates. 26

27. Thanks! Any questions? You can find me at @username · [email protected] 27

28. Credits Special thanks to all the people who made and released these awesome resources for free: Presentation template by SlidesCarnival Photographs by Unsplash 28

29. Presentation design This presentation uses the following typographies and colors: Titles: Yellowtail Body copy: Neuton You can download the fonts on these pages: https://www.fontsquirrel.com/fonts/yellowtail https://www.fontsquirrel.com/fonts/neuton Gray #666666 / Pastel green #97bfac / Leaf green #bdcc64 You don’t need to keep this slide in your presentation. It’s only here to serve you as a design guide if you need to create new slides or download the fonts to edit the presentation in PowerPoint® 29

30. SlidesCarnival icons are editable shapes . This means that you can: Resize them without losing quality. Change fill color and opacity. Isn’t that nice? :) Examples: 30

31. Now you can use any emoji as an icon! And of course it resizes without losing quality and you can change the color. How? Follow Google instructions https://twitter.com/googledocs/status/730087240156643328 ✋👆👉👍👤👦👧👨👩👪💃🏃💑❤😂😉😋😒😭👶😸🐟🍒🍔💣📌📖🔨🎃🎈🎨🏈🏰🌏🔌🔑 and many more... 😉 31