The outer layer of the earth which is broken into many pieces called plates.
What is the crust?
100
An undersea mountain chain where new ocean floor is produced.
What is a mid-ocean ridge?
100
A device that bounces sound waves off underwater objects and records the echoes of these sounds.
What is sonar?
100
A section of the lithosphere that slowly moves over the asthenosphere, carrying pieces of continental and oceanic crust.
What is a plate?
100
The transfer of heated particles to other particles through direct contact. Usually happens with solids but can sometimes happen with liquids.
What is conduction?
200
The outer layer of the earth which is broken into many pieces called plates.
What is the lithosphere?
200
The large, ancient landmass that was composed of all the continents joined together.
What is Pangaea?
200
The process that creates new sea floor as plates move away from each other at the mid-ocean ridges.
What is sea-floor spreading?
200
A plate boundary where two plates move away from each other.
What is a divergent boundary?
200
The transfer of heat through empty space.
What is radiation?
300
Made of molten iron and nickel in the liquid state. 1400 miles thick and ranges from 4000 to 9000 degrees.
What is the outer core?
300
-rock layers on coastlines of different continents match
-same species of plant/animal fossils found on different continents separated by oceans
-glacial ice in areas that are now located near the equator
-salt/coal deposits (which only form in warm climates) found in areas with cold climates
What is evidence of continental drift?
300
molten material, magnetic stripes, drilling samples
What is evidence for sea-floor spreading?
300
The San Andreas fault in California and is an example of this kind of plate boundary.
What is a transform boundary?
300
Gases and liquids.
What are fluids?
400
The layer of "plastic rock" directly under the crust on which the plates float.
What is the asthenosphere?
400
The theory that states that the continents once formed a single landmass, broke up, and drifted to their present locations.
What is the theory of Continental Drift?
400
Happens by molten material erupting and cooling.
What is the addition of new sea-floor?
400
This determines which plate comes out on top when plates collide.
What is density or the density of the plate?
400
A well-tested concept that explains a wide range of observations.
What is a scientific theory?
500
Created by movements in the liquid outer core.
What is the earth's magnetic field.
500
Wegener's theory of how mountains formed.
What is folding and crumpling?
500
A deep valley along the ocean floor beneath which oceanic crust slowly sinks toward the mantle.
What is a deep ocean trench?
500
Subducting plates are an example of this kind of boundary.
What is a convergent boundary?
500
Evidence that you cannot touch or see directly. Pieced together through different information so that inferences can be made. For example, seismic waves.