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