Age of the Earth
Theory of Continental Drift
Theory of Plate Tectonics
Plate Boundaries
Building Up/Breaking Down
Earth's Spheres
100

Early earth had very little ____________ in the atmosphere, therefore there was very little life on the planet.  

oxygen

100

The supercontinent proposed by Alfred Wegener in 1915.

Pangea
100

Solid plates that cover earth's surface

Lithosphere

100

This type of plate boundary is responsible for the formation of the Atlantic Ocean.

divergent

100

any activity that includes the movement of magma toward or onto Earth's surface

volcanism

100

This sphere of the Earth is made up of all the living things.

Biosphere

200

the age of an object in relation to the ages of other objects

relative age

200

Evidence for continental drift that shows Antarctica was once warm.  

Climatic Evidence

200

The process by which new oceanic lithosphere (seafloor) forms as magma rises to Earth's surface and solidifies at a mid-ocean ridge.


Seafloor spreading

200

During a continent-continent collision, the Himalayan Mountains were formed.  This type of plate boundary is shown.  


convergent

200

Magma reaches Earth's surface by rising through _________ dense rock in the crust.

less

200

A scientist that studies rocks might be interested in this sphere of the earth.   

geosphere

300

The type of rock used to determine the relative age of other rocks.  

Sedimentary rock

300

The piece of evidence for continental drift shown below. 


Fossil correlation

300

Ocean crust will subduct (go under) another plate because ocean crust is ___________.

dense

300

The Hawaiian Islands were formed from this specific type of convergent collision.  


Oceanic-Oceanic

300

the process in which materials of Earth's surface are loosened, dissolved or worn away

weathering

300

When one or more spheres interact and change each other at the same time.  

Coevolution

400

The method used to determine the absolute age of a rock.

radiometric dating

400

This type of evidence for Continental Drift came much later in the 1950's.  


Seafloor spreading

400

This image shows all of the __________  ___________ on the earth.  

plate boundaries

400

This fault line is responsible for many earthquakes and is this type of plate boundary.  


transform 

400

The following picture is an example of the transport of earth materials from one place to another.


erosion


400

Using chemicals and pesticides on our crops (food) will not only affect the geosphere but will also affect this sphere directly when the chemicals runoff into groundwater.

Hydrosphere

500

Basalt rock is ___________ than granite rock.  

younger 

500

The mountain range shown above that gives evidence for continental drift. 

Appalachian Mountains

500

Tectonic plates move as a result of ____________ in the Earth's mantle

convection

500

The result of a divergent boundary.

rift/ridge
500

A vent or crack in the earth's surface.

fissure
500

When carbon dioxide dissolves from the air into the ocean- the interaction is between...

atmosphere and hydrosphere