Heat Transfer, Mantle Plumes & Tectonic Cycle Flashcards Preview

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Flashcards in Heat Transfer, Mantle Plumes & Tectonic Cycle Deck (39)
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1

What causes plates to move, what drives the movement of these plates, why do they move across the surface of the Earth?

still ongoing research about these questions but the best theories have to do with the movement and transfer of heat within the Earth.

2

the heat within the Earth comes form the initial (ignition)_____ of the Earth and its been cooling down ever since

formation

3

Energy driving plate tectonics comes from Earth internal ______.

heat

4

The earth has internal heat from...

its initial formation processes and ongoing radioactive decay

5

What are the two basic ways heat transfers through any media?

conduction and convection

6

When heat moves through a solid body without deforming it this is called...

conduction

7

______ is the transfer of heat from atom to atom and molecule to molecule

Conduction

8

What is an example of conduction?

a coffee mug - when you pour coffee into the mug, the outside of the mug feels warm in your hands because the heat is moving through the atoms of the ceramic mug

9

Is conduction a slow or fast process?

slow

10

What is convection?

heat transfer as a result of hot material circulating from hotter to cooler areas, losing its heat, and recycling

11

Convection is the _______ of hot material

circulation

12

Convection is heat transfer as a result of hot material....

circulating form hotter to cooler areas, losing its heat, and recycling.

13

In convection heat circulates from ______ to ______ areas, as it does so it ______ its heat and recycles

hotter, cooler, loses

14

hot water naturally rises because it is less _____, as hot water reaches the surface it starts to ______ down, cool water _____ because it is more dense, as the cool water reaches the bottom it starts to heat up and ____.

dense, cool, sinks, rises

15

the circulation of fluid or gases is called...

convection

16

convection is _____ and _____

efficient, rapid

17

In the mantle there is _____ ________ occurring

heat transfer

-hot material can circulate somewhat inside the plasticy mantle

18

the _______ of the mantle serves to pull the tectonic plates along with it

convection

19

What is another name for a mantle plume?

a hot spot

20

a mantle plume is also called a....

hot spot

21

mantle plumes are...

sources of hot swelling rock that come up through the Earth's crust

22

What do manly plumes produce?

- volcanic island chains -

23

Hot spots are areas of the world where...

magma comes up through the crust, not related to plate boundaries

24

A mantle plume is ______ and the plate moves above it

stationary

25

hot spots track...

plate movement

26

the tectonic cycle is the idea that...

all of the rock, and mantle, and crustal material we have on Earth is all we are ever going to have. It is a closed cycle made up of open cycles

27

the tectonic cycle is the process and cycle by which new _____ lithosphere is formed and old is destroyed

oceanic

28

The processes of the tectonic cycle include the actions of...

- Earthquakes - Volcanoes - Plate motion due to mantle convection

29

Is there an overall net decrease or increase in the Earths crust?

neither. no net increase 

30

where is new crust being created?

divergent margin