Earth's Interior
Earth's inner core is made up of
a dense ball of solid metal.
The theory of __________ explains the movement and formation of earth plates
Plate Tectonics
Part of the mantle called the ____________ is below the lithosphere.
Athenosphere
What is Pangea
A supercontinent million years ago
Crust, Mantle, Outer Core, Inner Core
A rift valley forms along a ___________
Divergent plate boundary
Transform Boundary
Wagner's hypothesis of continental drift was
The continents were once a single landmass
Geologist obtained indirect evidence about Earth's interior by
Recording and studying seismic waves
A collision between two pieces at a converging boundary produces a _________
Mountain Range
The process of ____________ is the sea floor spreading both sides of a mid ocean ridge
Seafloor Spreading
Which type of evidence was NOT used by Alfred Wagner?
Evidence from human remains
How do scientists know that rocks are further away from the mid ocean ridge were older then the newer ones?
obtaining the age of rock by drilling on samples
The ocean floor sinks beneath a deep ocean where _________ takes place.
Subduction
Two plates come together is know as ____________
Convergent Boundry
Most geologists rejected Alfred Wegener's idea of continental drift because
Wagener couldn't provide an explanation for the push or pull of the contients
The _________ is made up of liquid and iron
Outer Core
The lithosphere is broken into separate sections called __________
Plates
What was discovered about the mid ocean ridge?
Pillow shaped rocks
A dense ball of solid metal is called
Inner Core