Plate TectonicsUnit: Dynamic Planet

The Unit so far

• Absolute and Relative Dating

• Rock Column• Index Fossil

• Principle of original horizontality• Half-life

• Radiometric Dating

The Unit so far

• You already know that the earth is divided into plates that move and

shift

•W

hat a

re

Earth

qu

ake

s an

d• What are the

forces That are involved in causing

these dynamic aspects of the

Earth?

volc

an

oes?

Wh

at ca

use

s the

Earth

to m

ove a

nd

I can model the forces believed

to be involved in the movement of

the crust.

volc

an

oes to

eru

pt?

Vocabulary• Subduction zone

• Oceanic Crust/plate• Continental

Crust/plate• Earthquake• Partial melt• Volcano• Crust• Mantel

• Lithosphere• Asthenosphere

• Core• Ocean Trench/Ridge• Divergent plate

boundary• Convergent plate

boundary• Transform plate

boundary

Layers of the Earth

Lets look at your model

92% of the ocean is 39o

In an area where fluids of different temperatures are

mixed what happens with the colder temperature fluids?