Show:
VOCABULARY
OCEANS AND CONTINENTS
FLOATING PLATES
PLATE MOTION
MEASURING PLATE MOVEMENT
100
A crack in Earth's crust along which movement takes place.
What is a fault?
100
This is composed of granitic rocks.
What is continental crust?
100
The lithosphere is broken into sections.
What is lithosphere?
100
The temperature difference causes this to occur?
What is convection current?
100
This device is used to accurately measure locations on the earth.
What is GPS?
200
Melted rock below Earth's surface.
What is magma?
200
These are formed from hot, molten rock.
What is igneous rocks?
200
The hot plastic section of the mantle.
What is asthenosphere?
200
In a convection current this causes the current to move?
What is heat rises and cold falls?
200
What GPS is designed to do.
What is very accurate maps of Earth?
300
Convection drives the fluid through a circular path.
What is a convection current?
300
This is how think the continental crust is.
What is about 40 km thick?
300
This why the lithosphere doesn't sink into the hot lower area?
What is the asthenosphere is denser OR the lithosphere is lighter?
300
This is when Pangaea started to break up.
What is about 200 million years ago?
300
This is a network that helps with the accurate measurements.
What are satellites?
400
The transfer of thermal energy by the mass movement in a fluid.
What is convection?
400
These are two types of basaltic rocks?
What is basalt and gabbro?
400
This explains why the continental crust can be thicker than the oceanic crust?
What is density?
400
The Pacific Plate is moving past the North American Plate at this speed.
What is 5 cm per year?
400
Using measuring technologies, the different locations can be located to within this measurement.
What is 1 cm?
500
Plates spread apart, magma flows up and fills the space.
What is sea-floor spreading?
500
These rocks are the more denser of the two crusts.
What are granitic rocks?
500
This is why the total size of the planet is not changing.
What is shrinking and enlarging plates?
500
The rate at which fingernails grow?
What is about 10 cm per year?
500
These two technologies are also used in addition to GPS.
What is ground-based radar and laser technology?