Earth's Interior
Convection and the Mantle
Continental Drift and Sea-floor Spreading
The theory of Plate Tectonics
Earth's Plate Boundaries
100
Where do geologists gather direct evidence?
From rock samples
100
How many types of heat transfer are there?
three
100
Who hypothesized that at one time all the continents were once joined together in a single landmass, he named Pangea
Alfred Wegener
100
What was the name of the scientist that proposed the lithosphere is broken into separate sections called plates?
J. Tuzo Wilson
100
What is it called when two plates slip past each other moving in opposite directions?
A transform boundary
200
Where do geologists gather indirect evidence from?
Seismic waves
200
What are the three types of heat transfer
radiation, conduction, and convection
200
Who proposed the idea of sea-floor spreading
Harry Hess
200
The edges of plates meet at lines called what?
plate boundaries
200
What is it called where a continental plate collides with an oceanic plate, and the denser plate subducts
A Convergent boundary (ocean-to-continent)
300
What are the three main layers of Earth?
the crust, the mantle, and the core
300
Where do convection currents flow?
the mantle
300
Evidence from land features such as ___________ ranges lining up on continents when pieced together
mountain
300
What does the theory of plate tectonics explain?
the formation, movement, and subduction of earth's plates
300
What is it called when two plates move apart or diverge
A divergent boundary
400
What is the inner core?
a dense ball of solid metal
400
What is radiation?
the transfer of energy through empty space, it has no direct contact between heat source and an object
400
What are underwater canyons called?
deep-ocean trenches
400
What is a place where two plates come together, or converge, causing a collision
convergent boundary
400
What do continent-to-continent convergent boundaries create?
mountain ranges
500
What is the asthenosphere?
the softer part of the mantle below the lithosphere
500
What is density
the measure of how much mass there is in a volume of a substance
500
Evidence of sea-floor spreading includes something that looks like pillow-shaped rocks is called what?
Evidence from molten material
500
What is a transform boundary?
a place where two plates slip past each other moving in opposite directions
500
Name all three types of plate boundaries
transform boundaries, divergent boundaries, and convergent boundaries
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