WEEK #7 / ACTIVITY #1 (Tectonics)

WEEK #7 / ACTIVITY #1 (Tectonics)

We will review the basics of the mainstream scientific theory of Plate Tectonics.

The layers of the Earth's interior

In simple terms, there are 4 layers inside of the Earth.

1) CRUST; SOLID outer "shell" of the Earth

2) MANTLE; PARTIALLY-MELTED layer

3) OUTER CORE; LIQUID metal layer

4) INNER CORE; SOLID metal layer

Multiple Select

Check all that apply.

What are the 4 basic layers of the Earth?

• inner core

• biosphere

• outer core

• crust

• mantle

Tectonic Plates

-Earth's crust is broken up into "Tectonic Plates"

-Tectonic Plates move very slowly

-Tectonic plates;

1) Crash or CONVERGE

2) Separate or DIVERGE

3) Slide past or TRANSFORM

Multiple Choice

Mark the statement that is TRUE.

• Tectonic plates can converge, diverge or transform

• Tectonic plates can converse, divide or transmission

Movement of Tectonic Plates

-The Earth's crust (Tectonic Plates) converge, diverge or transform as a result of CONVECTION CELLS in the MANTLE.

Multiple Select

Choose the answer that has the missing term.

-The Earth's crust (Tectonic Plates) converge, diverge or transform as a result of ????????? ?????? in the MANTLE.

• soft cells

• convection cells

• conduction cells

• terrorist cells

What "DRIVES" the movement of Tectonic Plates?

-Convection cells in the MANTLE are a result of HEAT transfer.

-The Earth's INNER CORE is the source of HEAT.

-HEAT escapes from the INNER CORE and travels away from it.

The HEAT from the INNER CORE transfers into the MANTLE and causes circular MOVEMENT.

-

These circular MOVEMENTs are called "CONVECTION CURRENTS"

Multiple Choice

Where is the heat source that ultimately drives convection currents in the mantle?

• crust

• outer core

• mantle

• inner core

Convergent Tectonic Boundary

-When Tectonic Plates collide, crash or come together, CONVERGENT plate boundaries are formed.

-To "converge" means to "meet together"

Multiple Choice

Choose the answer that has the missing term.

-When Tectonic Plates collide, crash or come together, ????????? plate boundaries are formed.

• transform

• divergent

• convergent

Convergent Boundary Features

-Very large & very explosive stratovolcanoes

-Very deadly & dangerous PYROCLASTIC flows can occur at stratovolcanoes.

-Mt. St. Helens is a stratovolcano that erupted in 1980.

-Very powerful earthquakes

-Tsunamis

-Very tall mountains (Mt. Everest)

-Thermal activity (hot springs)

Multiple Choice

Mt. Saint Helens erupted in 1980.

Mt. Saint Helens is classified or categorized as a ?

• shield volcano

• stratovolcano

• lahar

• cinder cone

Divergent Tectonic Boundaries

-When Tectonic Plates pull apart, separate or move away from each other DIVERGENT plate boundaries are formed.

-Diverge means to move away, separate or extend

in another direction

Multiple Choice

Choose the answer that includes the missing term.

--When Tectonic Plates pull apart, separate or move away from each other ???????? plate boundaries are formed.

• convergent

• transform

• divergent

Divergent Boundary Features

-Volcanic activity occurs at DIVERGENT boundaries. However, the volcanic activity is not very powerful, though an immense amount of material can be erupted.

-Rift valleys

-Weak earthquakes

-Thermal activity (hot springs)

Multiple Select

Choose TWO factual statements regarding tectonic features of DIVERGENT boundaries?

• Strong earthquakes

• Weak earthquakes.

• Powerful Volcanoes

• Rift Valleys

Transform Tectonic Boundary

-When Tectonic Plates slide past each other, a TRANSFORM plate boundary is formed.

Multiple Choice

Choose the answer that has the missing term.

-When Tectonic Plates slide past each other, a ?????? plate boundary is formed.

• convergent

• divergent

• transform

Transform Boundary Features

-Very large EARTHQUAKES

-The San Andreas Fault is a local Transform Tectonic Boundary

-Thermal activity (hot springs)

Multiple Choice

True or False?

We live very close to the San Andreas Fault?

If we drive to Bakersfield from Ventura County, we will drive over the San Andreas Fault?

• True

• False

• True-False

• There is no such thing as truth.

• There is no such thing as false...DON'T JUDGE!!!